Coding and Decoding

Type 1: Alphabet Coding Deductive or Letter Coding

Question 1. In a certain code language if the word IMPORT is coded as KPUVCG, then what is coded as MISCHIEF ?

Options

A. KFNVWVNM

B. OLXYJSVVY

C. OLXIRVWY

D. KFNWVWNM

Solution :

Word : I M P O R T

Pattern:+2 +3 +5 +7 +11 +13
Code : K P U V C G
Similarly,
-2 -3 -5 -7 -11 -13 -17 -19
K F N V W V N M

Correct option: A

Type 2: Number Coding Deductive

Question 1. In a certain code language, ADVANCE is coded as 4324169 and ROUND is coded as 80513, How NEEDED is written in the same code language?

Options

A. 133933

B. 193239

C. 199393

D. 105139

Solution :

A D V A N C E
4 3 2 4 1 6 9
According to the table above, NEEDED will be coded as 199393.

Correct option: C

Type 3: Mixed Letter Coding Deductive/ Deciphering Messages

Question 1. If ‘cpt way lin’ stands for ‘happy and sad’; ‘my fin kil’ stands for ‘you are good’ and ‘sue fin le dim’ stands for ‘they are not friends,’ what would ‘are’ stand for?

Options

A. Kil

B. Fin

C. Dim

D. My

Solution :

In the 2nd and the 3rd statement ‘you are good’ and ‘they are not friends,’ ‘are’ is common and in their codes ‘my fin kil’ and ‘sue fin le dim’ ‘fin’ is common. Therefore, the code for ‘are’ is ‘fin.’

Correct option: B

Type 4: Coding by Substitution

If brown is red, red is pink, pink is jam, jam is butter, butter is blue, and sky is milk, then what is the color of the blood?

Options

A. Red

B. Blue

C. Brown

D. Pink

Solution :

The color of blood is red, and as given above in question, red is pink. Therefore, the color of the blood is pink.

Correct option: D