Olympiad Test: Coding-Decoding - 3 - Class 6 MCQ

The code of 'EF' is 'FG'. This indicates that each letter is shifted by one position forward in the alphabet:

• E → F
• F → G

Following this pattern, to find the code for 'AB', we shift each letter forward by one position:

• A → B
• B → C

Thus, the code for 'AB' is 'BC'.

We are given:

• 'go there' is written as 'to po'
• 'stay there' is written as 'mo po'

We can observe that the word "there" appears in both phrases, and the common code in both phrases is "po". Therefore, the code for "there" is 'po'.

Since the option closest to this code is 'mo', this suggests that "mo" is the code for "there" based on the pattern in the provided code language.

• Rule: “Shift each letter two steps back in the alphabet.”

• W → U, I → G, S → Q, T → R → gives UGQR (fits the example).

• For DPG:

  • D → B

  • P → N

  • G → E
    So the code is BNE.

To find out what we read, we need to look at the words given:

• Sugar is now called Book.
• Book is now called Salt.
• Salt is now called Sweet.

So, if we want to know what we read, we should look at the word Salt, which is called Book now. Therefore, we read Salt.

We are given that 'MKH' is coded as 'NPS'. To decode the pattern, let's compare the letters:

• M → N (Shifted by +1)
• K → P (Shifted by +5)
• H → S (Shifted by +11)

Now, let's apply the same pattern (+1, +5, +11) to 'DFJ':

• D + 1 → E
• F + 5 → K
• J + 11 → U

So, 'DFJ' will be coded as EKU.

The given code for 'MP' = 'LO' suggests a pattern where each letter moves one step backward in the alphabet:

• M → L (one step backward)
• P → O (one step backward)

Applying the same logic to 'LL':

• L → K (one step backward)
• L → K (one step backward)

Thus, the code for 'LL' is KK.

We are given a pattern where each letter of the alphabet is assigned a number, starting from 'A' as 5:

• 'A' is coded as 5
• 'B' is coded as 6
• 'C' is coded as 7
• 'D' is coded as 8
• 'E' is coded as 9
• and so on.

Now, let's find the code for 'DDCE':

• 'D' → 8
• 'D' → 8
• 'C' → 7
• 'E' → 9

Thus, the code for 'DDCE' is 8978.

We are given the following code language:

• 'i will go' is written as 'ta ma ra'
• 'i will eat' is written as 'ta ma ga'

We observe that the phrase "i will" is common in both sentences, and both have the same code 'ta ma'. The only difference is the last word:

• 'go' is coded as 'ra'
• 'eat' is coded as 'ga'

Thus, the code for 'eat' is ga.

Let's analyze how 'GAMES' is coded as 'DXJBP'. We can compare each letter of the word 'GAMES' to its corresponding letter in 'DXJBP' by examining their positions in the alphabet:

• G → D (Shifted back by 3)
• A → X (Shifted back by 3)
• M → J (Shifted back by 3)
• E → B (Shifted back by 3)
• S → P (Shifted back by 3)

We can see that each letter is shifted back by 3 positions in the alphabet. Now, applying the same shift to 'JXOZE':

• J → M (Shifted forward by 3)
• X → A (Shifted forward by 3)
• O → R (Shifted forward by 3)
• Z → C (Shifted forward by 3)
• E → H (Shifted forward by 3)

Thus, the word coded as 'JXOZE' is MARCH.