Test: Coding & Decoding - 3 - Railways MCQ

Clearly, each word is coded by the numeral which is 1 less than the number of letters in the word.
Since, there are 10 letters in the word GOVERNMENT, so required = 10 – 1 = 9.
Hence, option C is correct.

In the given coding system, we have:

So, the code for BOIL is 5, 31, 19, 25.
Hence, option D is correct.

Clearly, the order of letters in the word is reversed and then each letters is replaced by the numeral denoting its position in the English alphabet. Next, 2 is added to each numeral and the numerals so obtained are joined together physically to get the code. Thus, we have :

RED → DER → 4/5/18 → 6/7/20 → 6720.

GREEN → NEERG → 14/5/5/18/7 → 16/7/7/20/9 → 1677209.
Hence, option B is correct.

Clearly, putting A = 1, B = 2, C = 3, D = 4, E = 5, ..........M = 13, ...... x = 24, Y = 25, Z = 26, we have :
PEN = P + E + N = 16 + 5 + 14 = 35.
So, PAGE = P + A + G + E = 16 + 1 + 7 + 5 = 29.
Hence, option C is correct.

The numeric value of the letters (considering A to be 1 and Z to be 26) is added and simplified to obtain a single digit.

For RAM, the numeric value of R, A and M is 18, 1 and 13 respectively. Their sum is 32, Now 32 is further simplified to obtain a single digit by adding 3 and 2, which gives us 5 as the final value.
Similarly for GUI, the numeric value of G,U and I is 7, 21 and 9 respectively. Their sum is 37, which is simplified as 3 + 7 = 10 => 1 + 0 = 1.
Similar process will be done to obtain the code for SAP, the numeric value of S, A and P is 19, 1 and 16 respectively. Their sum is 36, which is simplified as 3 + 6 = 9.
So, the code for SAP is 9.
Hence option (B) is correct.

Hence, option A is correct.

∴ STOLL → $2@33
Hence, option B is correct.

The numeric value of the letters (considering A to be 1 and Z to be 26) is added and simplified to obtain a single digit.
For ZOO, the numeric value of Z, O and O is 26, 15 and 15 respectively. Their sum is 56, Now 56 is further simplified to obtain a single digit by adding 5 and 6, which gives us 11 which is again added to obtain 2 as the final value.
Similarly for TAN, the numeric value of T, A and N is 20, 1 and 14 respectively. Their sum is 35, which is simplified as 3 + 5 = 8.
Similar process will be done to obtain the code for WAR, the numeric value of W, A and R is 23, 1 and 18 respectively. Their sum is 42, which is simplified as 4 + 2 = 6.
So, the code for WAR is 6.
Hence option (B) is correct.

Thus, the code for REMAIN is 8@7$%6.
Hence, option D is correct.