Olympiad Test: Coding – Decoding - 2 - Class 5 MCQ

We have,

Logic: As per observation, there is no alphanumeric series being followed but we have provided this,

For FIRE:

F → Q

I → H

R → O

E → E

For MOVE:

M → Z

O → M

V → W

E → E

Similarly,

From the above code we can find that code for ‘OVER’

O → M

V → W

E → E

R → O

Hence, the correct answer is MWEO.

Here, each letter is coded by the numerical value obtained by subtracting its ‘position value’ in English alphabetical order, from 27, e g. W, O, R, K are at 23rd, 15th, 18th, and 11th position in alphabetical order. So, their codes are (27–23), (27–15), (27–18), (27–11), i.e., 4, 12, 9, 16 respectively i.e. their backward order position.

So,

W → 4
O → 12
R → 9
K → 16 
By, following the above mention pattern we will get.
W → 4
O → 12
M → 14
A → 26
N → 13

Hence, ‘WOMAN’ is coded as "4-12-14-26-13".

In the given code, Z = 1, Y = 2, X = 3, ……. C = 24, B = 25, Z = 26. 
So, GO = 20 + 12 = 32 and SHE = 8 + 19 + 22 = 49. 
Similarly, SOME = S + O + M + E = 8 + 12 + 14 + 22 = 56. 

Taking Z = 2, Y = 3, …., N = 14, ……, B = 26, 
A = 27
ZIP
= (Z + I + P) × 6 = (2 + 19 + 12) × 6 = 33 × 6 
= 198 
VIP
= (V + I + P) × 6 = (6 + 19 + 12) × 6 = 37 × 6 
= 222  

Let A = 1, B = 2, C = 3, ……, Z = 26. Now, M = 13 = 4 (Remainder obtained after dividing by 9).
S = 19 = 1 (Remainder obtained after dividing by 9 twice)
T = 20 = 2 (Remainder obtained after dividing by 9 twice)
(Remainder obtained after dividing by 9)

Letter : B R A I N T E
Code : ∗  % ÷ # × $ +
The code for RENT is % + × $ 

Letter: D E L H I C A U T
Code: 7 3 5 4 1 8 2 9 6
The code for CALICUT is 8251896. 

Letter : N O I D A
Code : 3 9 6 5 8
The code for INDIA is 63568. 

Letter: E N G L A D F R C
Code: 1 2 3 4 5 6 7 8 9
The code for GREECE is 381191.

The logic followed here is:

Consonant is coded as +1.

Vowels is coded as their positions value (A = 1, E = 2, I = 3, O = 4, U = 5),

REQUEST is written as S2R52TU:

Similarly, for ACID

So, ACID will be written as 1D3E.

Hence, the correct answer is "Option A".

According to the question,

'DESK' is coded as '#$52' and 'RIDE' is coded as '%7#$'.

Similarly,

R is coded as %,

I is coded as 7,

S is coded as 5,

D is coded as 2.

So, 'RISK' is coded as %752.

Letter: E A T C H I R
Code: 3 1 8 2 4 5 6
The code for TEACHER is 8312436.

Letter: D E A F I L
Code: 3 5 8 7 4 6
The code for IDEAL is 43586. 

Logic: The number of letters in a word is multiplied by 2 for getting the answer.

For "DRIVER = 12".

The number of letters in "DRIVER" is 6.

So, 6 × 2= 12.

For "PEDESTRIAN = 20".

The number of letters in "PEDESTRIAN" is 10.

So, 10 × 2= 20.

For " ACCIDENT = 16".

The number of letters in "ACCIDENT" is 8.

So, 8 × 2= 16.

Similarly,

For "CAR".

The number of letters in word CAR is 3.

So, 3× 2 = 6.

As the obtained number is "6".

Hence, the correct answer is "6".

The logic followed here is:

So, in general, the color of Chillies are Green.

And, Chillies is called Bananas.

Hence, the correct answer is "Bananas".

Given:

‘sky’ → ‘star’,

‘star’ → ‘cloud’,

‘cloud’ → ‘earth’,

‘earth’ → ‘tree’ 

‘tree’ → ‘book’

Logic: the birds fly in the sky, but according to the above coding sky is star.

Hence, star is the correct answer.

As given, 'blue' means 'green', 'green' means 'white', 'white' means 'yellow', 'yellow' means 'black, 'black' means 'red', 'red' means 'brown'.

The original colour of milk is white. As per the question, 'white' means 'yellow'. Thus, the colour of milk is yellow.

Hence, the correct answer is 'Yellow'.

The logic follows here is:

A child will write with a pencil and the pencil is coded as a sharpener.
Hence, The correct answer is "sharpener".

Given that,

dust → air,

air → fire,

fire → water,

water → colour,

colour → rain,

rain → dust.

We know that fish live in water but in the given situation water is called colour then the answer will be fish live in colour.