Test: Coding & Decoding - 2 - Class 10 MCQ

Each letter in the word is moved one step forward to obtain the corresponding letter of the code.

The letter is the first half and the letter half of the word are separately reversed to obtain the code.

If we count letters till the end of the alphabet including that letter in reverse order then
Here the values are nothing but the values corresponding to the alphabets when taken in a reverse order,i.e,A = 26 ,B = 25...,Z = 1
G = 20 and O = 12 totaling 32
S = 8, H = 19 and E = 22 totaling 49

So
SOME = 8 + 12 + 14 + 22 = 56.

Here E = 5 = 5/1 = 5

=> READ = 18 + 5 + 1 + 4 = 28/4 = 7

=> DEAR = 4 + 5 + 1 + 18 = 28/4 = 7

14 N 10 L 42 P 2 M 80
Replacing the alphabet with the signs given, the equation becomes
14×10+42÷2−80
Applying BODMAS rule
14×10+21−80
140+21−80
81

A 'tractor' is used to plough a field.

But a 'tractor' is called 'car'.
So, a 'car' will be used to plough the field.

- There are 7 letters in the word

- The middle letter has been left intact

- The first and the last letters  of the word have interchanged their position. Similarly, the second and the third letters and the fifth and sixth letters have interchanged their position.

From the given data,
how many goals scored = 5397....(1)
many more matches = 982.....(2)
he scored five = 163.....(3)
from (1)&(2), many = 9 ....(4)
from (1)&(3), scored = 3 ....(5)
Using (4)&(5)in(1), we get goals = 5 or 7.

The letters of the word are reversed in order, taking two at a time, to obtain the code.

In the first and second statements, the common code digit is '2' and the common word is 'carpet'.
So, '2' means 'carpet'.
In the second and third statements, the common code digit is '6' and the common word is 'one'.
So, '6' means 'one'.
Therefore, in the second statement, '5' means 'dust'.