Coding and Decoding Questions

Q:

In a certain code language COMPUTER is written as RFUVQNPC. How will MEDICINE be written in that code language?

 A) MFEDJJOE B) EOJDEJFM C) MFEJDJOE D) EOJDJEFM

Explanation:

- There are 8 letters in the word.

- The coded word can be obtained by taking the immediately following letters of word, expect the first and the last letters of the given word but in the reverse order. That means, in the coded form the first and the last letters have been interchanged while the remaining letters are coded by taking their immediate next letters in the reverse order.

409 27496
Q:

In a certain code language,

'134' means 'good and tasty';

'478' means 'see good pictures'  and

'729' means 'pictures are faint'.

Which of the following digits stands for 'see'?

 A) 9 B) 2 C) 1 D) 8

Explanation:

Justification:

In the first and second statements, the common code digit is '4' and the common word is 'good'.

So, '4' stands for 'good'.
In the second and third statements, the  common code digit is '7' and the common word is 'pictures'.
So, '7' means 'pictures'.
Thus, in the second statements, '8' means 'see'.

294 14801
Q:

If FRIEND is coded as HUMJTK, how is CANDLE written in that code ?

 A) EDRIRL B) DCQHQK C) ESJFME D) DEQJQM

Explanation:

The first, second, third, fourth, fifth and sixth letters of th word are respectively moved two, three, four, five, six and seven steps forward to obtain the corresponding letters of the code.

159 11908
Q:

If ROSE is coded as 6821, CHAIR is coded as 73456 and PREACH is coded as 961473, what will be the code for SEARCH ?

 A) 246173 B) 214673 C) 214763 D) 216473

Explanation:

The alphabets are coded as shown :

So, in SEARCH,

S ia coded as 2,
E as 1,
A as 4,
R as 6,
C as 7,
H as 3.
Thus, the code for SEARCH is 214673

125 10980
Q:

If Z = 52 and ACT = 48, then BAT will be equal to

 A) 39 B) 41 C) 44 D) 46

Explanation:

In the given code, A = 2, B = 4, C = 6,.... , Z = 52.

So, ACT = 2 + 6 + 40 = 48 and

BAT = 4 + 2 + 40 = 46

276 9643
Q:

In a certain code language,

(A) ‘pit na som’ means ‘bring me water’

(B) ‘na jo tod’ means ‘water is life’

(C) ‘tub od pit’ means 'give me toy’

(D) ‘jo lin kot’ means ‘life and death’

Which of the following represents 'is' in that language ?

 A) jo B) na C) tod D) lin

Explanation:

Justification:

In statements A and B, the common code word is 'na' and the common word is 'water'.

So, 'na' means 'water'.

In statements B and D, the common code word is 'jo' and the common word is 'life'.
So, 'jo' means 'life'.
Thus, in statements B, 'tod' represents 'is'.

370 9240
Q:

If Z= 2197 and R= 729. How would J be written in that code?

 A) 216 B) 124 C) 512 D) 125

Explanation:

Similarly,

120 7635
Q:

In a certain code, MONKEY is written as XDJMNL. How is TIGER written in that code ?

 A) SHFDQ B) HFDSQ C) RSAFD D) QDFHS