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All questions of Coding-Decoding for Class 5 Exam

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In a certain code, MONKEY is written as XDJMNL. How is TIGER written in that code?
  • a)
    QDFHS
  • b)
    SDFHS
  • c)
    SHFDQ
  • d)
    UJHFS
Correct answer is option 'A'. Can you explain this answer?

Tanishq Mehra answered
The letter of the word are written in a reverse order and then each letter is moved one step backward to obtain the code.

If VICTORY is coded as YLFWRUB, how can SUCCESS be coded?
  • a)
    VXEEIVV
  • b)
    VXFFHVV
  • c)
    VYEEHVV
  • d)
    VYEFIVV
Correct answer is option 'B'. Can you explain this answer?

Neeraj chauhan answered
Each letter of word is moved three steps forward in the alphabet series to obtain the code.
 V I C T O R Y
+3+3+3+3+3+3+3
Y L F W R U B
S U C C E S S
+3+3+3+3+3+3+3+3
V X F F H V V

If in a code language, COULD is written as BNTKC and MARGIN is written as LZQFHM, how will MOULDING be written in that code?
  • a)
    CHMFINTK
  • b)
    LNKTCHMF
  • c)
    LNTKCHMF
  • d)
    NITKHCMF
Correct answer is option 'C'. Can you explain this answer?

Prabhat mehra answered
Solution:

The given code language follows a specific pattern to encode the given words. Let's analyze the given words and try to find the pattern.

Given, COULD is written as BNTKC and MARGIN is written as LZQFHM.

Observations:
- The first letter of the encoded word is the second letter of the original word.
- The second letter of the encoded word is shifted one position to the right from the original word.
- The third letter of the encoded word is the same as the third letter of the original word.
- The fourth letter of the encoded word is the third letter of the original word.
- The fifth letter of the encoded word is shifted one position to the left from the original word.
- The sixth letter of the encoded word is the same as the last letter of the original word.

Using the above observations, we can find the encoded form of the given word MOULDING.

MOULDING -> M O U L D I N G
Encoded form -> L N T K C H M F

Therefore, the correct answer is option 'C' i.e. LNTKCHMF.

​In a certain code, PRODUCTIONS is written as QQPCVEUHPMT. How is ORIENTATION written in that code?
  • a)
    PQJDOVBSJNO
  • b)
    PQJDOUBUJPO
  • c)
    PSJFOVBSJNO
  • d)
    NSHFMVBSJNO
Correct answer is option 'A'. Can you explain this answer?

Varun Jain answered
The first, third, fifth, seventh, ninth and eleventh letters in the word are each moved one step forward: the second, fourth, eighth and tenth letters are each moved one step backward, while the sixth letter is moved two step forward to obtain the corresponding letters of the code.

If DELHI is coded as 73541 and CALCUTTA as 82589662, how can CALICUT be coded?
  • a)
    5279431
  • b)
    5978213
  • c)
    8251896
  • d)
    8543691
Correct answer is option 'C'. Can you explain this answer?

Athul Malik answered
Explanation:
To find the code for CALICUT, we need to understand the coding pattern used for DELHI and CALCUTTA.

Coding pattern:
The coding pattern used for DELHI is as follows:
- D is replaced by 7
- E is replaced by 3
- L is replaced by 5
- H is replaced by 4
- I is replaced by 1

The coding pattern used for CALCUTTA is as follows:
- C is replaced by 8
- A is replaced by 2
- L is replaced by 5
- C is replaced by 8
- U is replaced by 9
- T is replaced by 6
- T is replaced by 6
- A is replaced by 2

Applying the coding pattern to CALICUT:
Using the coding pattern, we can find the code for CALICUT as follows:
- C is replaced by 8
- A is replaced by 2
- L is replaced by 5
- I is replaced by 1
- C is replaced by 8
- U is replaced by 9
- T is replaced by 6

Therefore, the code for CALICUT is 8251896, which is option C.

If in a certain language, MIRACLE is coded as NKUEHRL, then how is GAMBLE coded in that language?
  • a)
    JDOCMF
  • b)
    CLEMNK
  • c)
    HCPFQK
  • d)
    AELGMN
Correct answer is option 'C'. Can you explain this answer?

Varun Jain answered
Here M     I           R        A         C        L        E
        +1↓ +2↓     +3↓     +4↓     +5↓     +6↓    +7↓
         N     K          U        E        H        R        L
Similarly G        A         M        B         L      E
             +1↓     +2↓     +3↓     +4↓     +5↓    +6

In a certain code language, OPERATION is written as NODQBUJPO. How is INVISIBLE written in that code?
  • a)
    JOWJTJCMF
  • b)
    JOWJTHAKD
  • c)
    HMUHTJCMF
  • d)
    HMUHTHAKD
Correct answer is option 'C'. Can you explain this answer?

Kunal Desai answered
Introduction:
In this code language, each letter of the word is replaced by the letter which is two positions ahead in the English alphabet. For example, 'A' is replaced by 'C', 'B' is replaced by 'D', and so on. Let's apply this rule to the given word "OPERATION" to understand the code.

Code Analysis:
O + 2 = Q
P + 2 = R
E + 2 = G
R + 2 = T
A + 2 = C
T + 2 = V
I + 2 = K
O + 2 = Q
N + 2 = P

Therefore, "OPERATION" is written as "NODQBUJPO" in the given code language.

Applying the Code to "INVISIBLE":
Now, let's apply the same rule to the word "INVISIBLE" to find its code.

I + 2 = K
N + 2 = P
V + 2 = X
I + 2 = K
S + 2 = U
I + 2 = K
B + 2 = D
L + 2 = N
E + 2 = G

Therefore, "INVISIBLE" is written as "KPUKUDNG" in the given code language.

Conclusion:
Hence, the correct answer is option C, "KPUKUDNG" which is equivalent to "INVISIBLE" in the given code language.

In a certain code, BASIC is written as DDULE. How is LEADER written in that code?
  • a)
    NGCFGT
  • b)
    NHCGGU
  • c)
    OGDFHT
  • d)
    OHDGHU
Correct answer is option 'B'. Can you explain this answer?

Sushant Joshi answered
Understanding the Code Transformation
To decode how BASIC is transformed into DDULE, we need to analyze the pattern of letter changes.
Letter-by-Letter Analysis
- B to D: +2 (B=2, D=4)
- A to D: +3 (A=1, D=4)
- S to U: +3 (S=19, U=21)
- I to L: +3 (I=9, L=12)
- C to E: +2 (C=3, E=5)
The pattern reveals a sequence of shifts:
- The first letter shifts by +2,
- The second letter shifts by +3,
- The third letter shifts by +3,
- The fourth letter shifts by +3,
- The fifth letter shifts by +2.
Applying the Same Transformation to LEADER
Now, we will apply the same letter-shifting pattern to the word LEADER.
- L (12) to N (14): +2
- E (5) to H (8): +3
- A (1) to D (4): +3
- D (4) to G (7): +3
- E (5) to H (8): +3
- R (18) to U (21): +3
Resulting Letters
- From L to N: N
- From E to H: H
- From A to D: D
- From D to G: G
- From E to H: H
- From R to U: U
Thus, LEADER is transformed into NHGDGHU.
Conclusion
The correct answer based on the transformation rules is option B: NHCGGU.

If in a certain code, TWENTY is written as 863985 and ELEVEN is written as 323039, how is TWELVE written in that code?
  • a)
    863203
  • b)
    863584
  • c)
    863903
  • d)
    863063
Correct answer is option 'A'. Can you explain this answer?

Vaishnavi Sharma answered
Given:
In the given code, TWENTY is written as 863985 and ELEVEN is written as 323039.

To Find:
We need to find how TWELVE is written in that code.

Approach:
To find the code for the word TWELVE, we need to analyze the given codes for the words TWENTY and ELEVEN. By comparing the letters and their corresponding codes in these two words, we can determine the code for the word TWELVE.

Analysis:
Let's compare the letters and their codes in the words TWENTY and ELEVEN:

TWENTY:
- The first letter 'T' is represented by the code '8'.
- The second letter 'W' is represented by the code '6'.
- The third letter 'E' is represented by the code '3'.
- The fourth letter 'N' is represented by the code '9'.
- The fifth letter 'T' is represented by the code '8'.
- The sixth letter 'Y' is represented by the code '5'.

ELEVEN:
- The first letter 'E' is represented by the code '3'.
- The second letter 'L' is represented by the code '2'.
- The third letter 'E' is represented by the code '3'.
- The fourth letter 'V' is represented by the code '0'.
- The fifth letter 'E' is represented by the code '3'.
- The sixth letter 'N' is represented by the code '9'.

Pattern:
By comparing the codes for the corresponding letters in the words TWENTY and ELEVEN, we can observe the following pattern:
- The code for 'T' is '8' in both words.
- The code for 'W' is '6' in both words.
- The code for 'E' is '3' in both words.
- The code for 'N' is '9' in both words.
- The code for 'Y' is '5' in the word TWENTY.
- The code for 'L' is '2' in the word ELEVEN.
- The code for 'V' is '0' in the word ELEVEN.

Code for TWELVE:
Based on the above pattern, we can determine the code for the word TWELVE:
- The code for 'T' is '8'.
- The code for 'W' is '6'.
- The code for 'E' is '3'.
- The code for 'L' is '2'.
- The code for 'V' is '0'.
- The code for 'E' is '3'.

Therefore, the code for the word TWELVE is 863203.

Conclusion:
The code for the word TWELVE in the given code is 863203. Hence, the correct answer is option A.

If in a certain language if ENTRY is coded as 12345 and STEADY is coded as 931785, then state which the correct code for below word is.
ENDEAR
  • a)
    524519
  • b)
    174189
  • c)
    128174
  • d)
    124179
Correct answer is option 'C'. Can you explain this answer?

Devika Chakraborty answered
Solution:

Given,
ENTRY → 12345
STEADY → 931785

To find the code for ENDEAR, we need to identify the pattern in the given codes.

Observations:

- The code for each letter is a 5-digit number.
- The first letter of ENTRY is E, which is coded as 1. Similarly, the first letter of STEADY is S, which is coded as 9.
- The second letter of ENTRY is N, which is coded as 2. Similarly, the second letter of STEADY is T, which is coded as 3.
- The third letter of ENTRY is T, which is coded as 3. Similarly, the third letter of STEADY is E, which is coded as 1.
- The fourth letter of ENTRY is R, which is coded as 4. Similarly, the fourth letter of STEADY is A, which is coded as 7.
- The fifth letter of ENTRY is Y, which is coded as 5. Similarly, the fifth letter of STEADY is D, which is coded as 8.

From the above observations, we can see that the code for each letter is determined by its position in the word and the corresponding letter in the code word. Therefore, the code for ENDEAR can be found as follows:

ENDEAR → 128174

Hence, option (c) 128174 is the correct code for the word ENDEAR.

If in a code, MIND becomes KGLB and ARGUE becomes YPESC, then what will DIAGRAM be in that code?
  • a)
    BGYEPYK
  • b)
    BGYPYEK
  • c)
    GLPEYKB
  • d)
    LKBGYPK
Correct answer is option 'A'. Can you explain this answer?

Athul Malik answered
Explanation:

Given Codes:
- MIND → KGLB
- ARGUE → YPESC

Pattern Analysis:
- Each letter in the given word is shifted by a certain number of places to get the corresponding letter in the code.

Applying the pattern to DIAGRAM:
- D → B (D is shifted 2 places back to B)
- I → G (I is shifted 2 places back to G)
- A → Y (A is shifted 24 places back to Y)
- G → E (G is shifted 2 places back to E)
- R → P (R is shifted 2 places back to P)
- A → Y (A is shifted 24 places back to Y)
- M → K (M is shifted 2 places back to K)

Therefore, DIAGRAM in the given code would be:
- BGYEPYK
So, the correct answer is option 'A'.

In a certain case, GOODNESS is written as HNPCODTR. How is GREATNESS written in that code?
  • a)
    HQFZUODTR
  • b)
    HQFZUMFRT
  • c)
    HQFZSMFRT
  • d)
    FSDBSODTR
Correct answer is option 'B'. Can you explain this answer?

Muskaan Chavan answered
Letters at odd place in the coded word are one letter ahead of the letters in the basic word and letters at even places are one letter behind of the letters in the basic word as their positions in the alphabet.

If in a certain language, COUNSEL is coded as BITIRAK, how is GUIDANCE written in that code?
  • a)
    EOHYZKBB
  • b)
    FOHYZJBB
  • c)
    FPHZZKAB
  • d)
    HOHYBJBA
Correct answer is option 'B'. Can you explain this answer?

Neeraj chauhan answered
Below given pattern is followed for coding ‘COUNSEL' into 'BITIRAK':

C – 1 = B
O – 6 = I
U – 1 = T
N – 5 = I
S – 1 = R
E – 4 = A
L – 1 = K

So by following the above pattern we will get 
G – 1 = F
U – 6 = O
I – 1 = H
D – 5 = Y
A – 1 = Z
N – 4 = J
C – 1 = B
E – 3 = B

Hence, ‘GUIDANCE’ is coded as 'FOHYZJBB'.

In a certain code, TOGETHER is written as RQEGRJCT. In the same code, PAROLE will be written as
  • a)
    NCPQJG
  • b)
    NCQPJG
  • c)
    RCPQJK
  • d)
    RCTQNC
Correct answer is option 'A'. Can you explain this answer?

Avinash Patel answered
The letters at the odd positions are moved two steps backward and the letters at even positions are moved two steps forward to get the value.
So PAROLE will be NCPQJG

If SUMMER is coded as RUNNER, the code for WINTER will be
  • a)
    SUITER
  • b)
    VIOUER
  • c)
    WALKER
  • d)
    SUFFER
Correct answer is option 'B'. Can you explain this answer?

Muskaan Chavan answered
The first letter of the word is moved one step backward, while the two middle letters are each moved one step forward to obtain the corresponding letters of the code.

In a certain code, TWINKLE is written as SVHOJKD, then how would FILTERS be written in the same code?
  • a)
    EHKSDQR
  • b)
    EHKUDQR
  • c)
    EGKUDQR
  • d)
    GJMSFSR
Correct answer is option 'B'. Can you explain this answer?

Maya Mehta answered
Each letter of the word, except the middle letter, is moved one step backward while the middle letter is moved one step forward to obtain the corresponding letter of the code.

If in a certain language MADRAS is coded as NBESBT, how is BOMBAY coded in that language?
  • a)
    CPNCBX
  • b)
    CPNCPZ
  • c)
    CPNCBZ
  • d)
    CQOCBZ
Correct answer is option 'C'. Can you explain this answer?

Ashwini Goyal answered
Here    M    A        D          R        A        S
          +1↓ +1↓     +1↓     +1↓     +1↓     +1↓
            N    B         E         S        B         T
then     B    O         M         B       A         Y
          +1↓  +1↓     +1↓     +1↓     +1↓     +1↓
            C     P         N        C         B        Z

In a certain code, FAVOUR is written as EBUPTS. How is DANGER written in that code?
  • a)
    CBFFDS
  • b)
    CBMHDS
  • c)
    EBFHDS
  • d)
    EBHHFS
Correct answer is option 'B'. Can you explain this answer?

Pritam Kumar answered
The first, third and fifth letters are moved one step backward, while the second, fourth and sixth letters are each moves one step forward to obtain the corresponding letters of the code.

If in a certain language ENTRY is coded as 12345 and STEADY is coded as 931785, then state which is the correct code for below word.
NEATNESS
  • a)
    25196577
  • b)
    21732199
  • c)
    21362199
  • d)
    21823698
Correct answer is option 'B'. Can you explain this answer?

Mahesh Verma answered
**Explanation:**

To find the correct code for the word NEATNESS, we need to analyze the given codes for the words ENTRY and STEADY. Let's break it down step by step:

1. CODE FOR ENTRY: 12345
- The word ENTRY has 5 letters, so the code also has 5 digits.
- Each digit in the code corresponds to the position of the corresponding letter in the alphabet.

Therefore, the code for ENTRY can be derived as follows:
- E is the 5th letter in the alphabet, so the first digit is 5.
- N is the 14th letter in the alphabet, so the second digit is 14.
- T is the 20th letter in the alphabet, so the third digit is 20.
- R is the 18th letter in the alphabet, so the fourth digit is 18.
- Y is the 25th letter in the alphabet, so the fifth digit is 25.

Thus, the code for ENTRY is 12345.

2. CODE FOR STEADY: 931785
- The word STEADY has 6 letters, so the code also has 6 digits.
- Each digit in the code corresponds to the position of the corresponding letter in the alphabet.

Therefore, the code for STEADY can be derived as follows:
- S is the 19th letter in the alphabet, so the first digit is 19.
- T is the 20th letter in the alphabet, so the second digit is 20.
- E is the 5th letter in the alphabet, so the third digit is 5.
- A is the 1st letter in the alphabet, so the fourth digit is 1.
- D is the 4th letter in the alphabet, so the fifth digit is 4.
- Y is the 25th letter in the alphabet, so the sixth digit is 25.

Thus, the code for STEADY is 931785.

3. CODE FOR NEATNESS:
- The word NEATNESS has 8 letters, so the code for NEATNESS should have 8 digits.

By following the same pattern as before, we can derive the code for NEATNESS as follows:
- N is the 14th letter in the alphabet, so the first digit is 14.
- E is the 5th letter in the alphabet, so the second digit is 5.
- A is the 1st letter in the alphabet, so the third digit is 1.
- T is the 20th letter in the alphabet, so the fourth digit is 20.
- N is the 14th letter in the alphabet, so the fifth digit is 14.
- E is the 5th letter in the alphabet, so the sixth digit is 5.
- S is the 19th letter in the alphabet, so the seventh digit is 19.
- S is the 19th letter in the alphabet, so the eighth digit is 19.

Thus, the code for NEATNESS is 21732199.

Therefore, the correct code for the word NEATNESS is option **B) 21732199**.

In a certain code, RIPPLE is written as 613382 and LIFE is written as 8192. How is PILLER written in that code?
  • a)
    318826
  • b)
    318286
  • c)
    618826
  • d)
    338816
Correct answer is option 'A'. Can you explain this answer?

Maya Bajaj answered
To crack the code and find the code for the word PILLER, we need to analyze the given codes for the words RIPPLE and LIFE. Let's break down the given codes and try to identify the pattern.

Given codes:
- RIPPLE = 613382
- LIFE = 8192

1. Analyzing RIPPLE:
Let's assign numbers to the letters in the word RIPPLE:
- R = 6
- I = 1
- P = ?
- L = 3
- E = 8

If we observe closely, the code for each letter in RIPPLE seems to be related to its position in the word. Let's try to find the pattern:
- The code for the first letter 'R' is 6, which is the position of 'R' in the English alphabet.
- The code for the second letter 'I' is 1, which is the position of 'I' in the English alphabet.
- The code for the third letter 'P' is unknown.
- The code for the fourth letter 'L' is 3, which is the position of 'L' in the English alphabet.
- The code for the fifth letter 'E' is 8, which is the position of 'E' in the English alphabet.

2. Analyzing LIFE:
Let's assign numbers to the letters in the word LIFE:
- L = 8
- I = 1
- F = ?
- E = 9

Again, if we observe closely, the code for each letter in LIFE seems to be related to its position in the word. Let's try to find the pattern:
- The code for the first letter 'L' is 8, which is the position of 'L' in the English alphabet.
- The code for the second letter 'I' is 1, which is the position of 'I' in the English alphabet.
- The code for the third letter 'F' is unknown.
- The code for the fourth letter 'E' is 9, which is the position of 'E' in the English alphabet.

3. Finding the pattern:
From the analysis of RIPPLE and LIFE, we can conclude that the code for each letter in a word is related to its position in the word. So, let's apply this pattern to the word PILLER.

4. Finding the code for PILLER:
Let's assign numbers to the letters in the word PILLER:
- P = ?
- I = ?
- L = ?
- L = ?
- E = ?
- R = ?

Following the pattern we identified, the code for each letter in PILLER will be its position in the word. Therefore, the code for PILLER will be:
- P = 3 (position of P in PILLER)
- I = 1 (position of I in PILLER)
- L = 8 (position of L in PILLER)
- L = 8 (position of L in PILLER)
- E = 2 (position of E in PILLER)
- R = 6 (position of R in PILLER)

Hence, the code for PILLER is 318826, which matches with option A.

In a certain case, GIGANTIC is written as GIGTANCI. How is MIRACLES written in that code?
  • a)
    MIRLCAES
  • b)
    MIRLACSE
  • c)
    RIMCALSE
  • d)
    RIMLCAES
Correct answer is option 'B'. Can you explain this answer?

Devika Basak answered
First three letters of the word are kept as it is, sixth letter comes at fourth place shifting fourth and fifth letters to fifth and sixth placed respectively, and last two letters are exchanged.

If in a certain language if ENTRY is coded as 12345 and STEADY is coded as 931785, then state which the correct code for below word is.
ARREST
  • a)
    744589
  • b)
    744193
  • c)
    166479
  • d)
    745194
Correct answer is option 'B'. Can you explain this answer?

Gargi Roy answered
Explanation:

To find the correct code for the word "ARREST," we need to understand the coding pattern used in the given language. Let's analyze the coding pattern based on the given examples:

- ENTRY is coded as 12345
- STEADY is coded as 931785

Pattern Analysis:

By comparing the coded words with their corresponding original words, we can identify the pattern:

ENTRY: 1 2 3 4 5
STEADY: 9 3 1 7 8 5

Pattern Observation:

From the pattern analysis, we can observe that:
- Each letter in the original word is replaced by a corresponding digit in the coded word.
- The digits used in the coded word are in ascending order.

Applying the Pattern to "ARREST":

Now, let's apply the observed pattern to the word "ARREST":

A - The first letter is 'A.' The corresponding digit in the coded word should be the smallest digit available, which is 1. So, the first digit of the code for "ARREST" is 1.
R - The second letter is 'R.' The next available digit after 1 is 3. So, the second digit of the code is 3.
R - The third letter is 'R' again. The next available digit after 3 is 4. So, the third digit of the code is 4.
E - The fourth letter is 'E.' The next available digit after 4 is 5. So, the fourth digit of the code is 5.
S - The fifth letter is 'S.' The next available digit after 5 is 7. So, the fifth digit of the code is 7.
T - The sixth letter is 'T.' The next available digit after 7 is 9. So, the sixth digit of the code is 9.

Therefore, the correct code for the word "ARREST" is 134579.

Checking the Options:

Now, let's check the given options to find the correct code for "ARREST":

a) 744589 - This option does not follow the observed pattern as the digits are not in ascending order. Hence, it is not the correct code.
b) 744193 - This option does not follow the observed pattern as the digits are not in ascending order. Hence, it is not the correct code.
c) 166479 - This option does not follow the observed pattern as it starts with a digit that is not the smallest available. Hence, it is not the correct code.
d) 745194 - This option follows the observed pattern as the digits are in ascending order and each letter is replaced by the next available digit. Hence, it is the correct code for "ARREST".

Therefore, the correct code for the word "ARREST" is option d) 745194.

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