Olympiad Test: Coding – Decoding - 2 - Class 6 MCQ

We have,

Letter: F I R E M O V
Code: Q H O E Z M W
The code for OVER is MWEO. 

Each letter is coded by the numeral obtained by subtracting from 27 then numeral denoting the position of the letter in the English alphabet. W, O, M, A, N are 23rd, 15th, 13th, 1st and 14th letters. So their codes are (27 – 23), (27 – 15), (27 – 13), (27 – 1), (27 – 14) 
i.e. 4, 12, 14, 26, 13 respectively. 

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.

Vowels A, E, I, O, U are coded as 1, 2, 3, 4, 5 respectively. Each of the consonants in the word is moved one step forward to give the corresponding letter of the code so, the code for ACID becomes ID3E. 

Letter: D E S K R I
Code: # 5 2 % 7
The code for RISK is % 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. 

CAR = (Number of letters in CAR) × 2 = 3 × 2 = 6

‘Chillies’ are green in colour and as given, ‘chillies’ are ‘bananas’. So, ‘bananas’ are green in colour. 

Birds fly in the ‘sky’ and as given, ‘sky’ is ‘star’. So, birds fly in the ‘star’. 

The colour of milk is ‘white’. But, as given ‘green’ means ‘white’. So, the colour of milk is green. 

A child will write with a ‘pencil’ and ‘pencil’ is called sharpener. So, a child will write with a ‘sharpener’. 

Fishes l ive in ‘water’ and as given, ‘water’ is called ‘colour’. So, fishes live in ‘colour’.