Coding – Decoding (SSC MTS 2021 Tier 1)

21. In a certain code language, ‘GANT’ is coded as ‘126’ and ‘PROM’ is coded as ‘186’. How will ‘GAIL’ be coded in that language? [S.S.C MTS 12/07/2022 (Afternoon)]

(a) 63
(b) 79
(c) 58
(d) 87

Correct Answer: (d) 87

Solution:Sum of place value of letters in alphabet × 3
GANT = {(7 + 1 + 14 + 20) × 3} = 126
PROM = {(16 + 18 + 15 + 13) × 3} = 186
Similarly,
GAIL = {(7 + 1 + 9 + 12) × 3} = 87

22. If White is called Blue, Blue is called Red, Red is called Yellow, Yellow is called Green, Green is called Black, Black is called Violet and Violet is called Orange, then what would be the colour of human blood? [S.S.C MTS 13/07/2022 (Morning)]

(a) Yellow
(b) Violet
(c) Red
(d) Green

Correct Answer: (a) Yellow

Solution:Colour of human blood is Red but here Red is called Yellow. So, option (a) is the correct answer.

23. In a certain code language, ‘grapes are multi red’ is coded as ‘8 6 4 3’, ‘red people eat mango’ is coded as ‘7 4 5 2’ and ‘mango multi apple’ is coded as ‘3 5 0’. How will ‘red apple’ be coded in that language? [S.S.C MTS 13/07/2022 (Morning)]

(a) 8 5
(b) 4 0
(c) 5 0
(d) 8 6

Correct Answer: (b) 4 0

Solution:

Hence, we get "red apple" = "4 0"

24. In a certain code language, ‘ri ti gi’ is written as ‘Usha playing cards’, ‘si ni gi’ is written as ‘Asha playing tennis’ and ‘ri si wi’ is written as ‘cards and tennis’. What is the code for the word ‘tennis’ in that language? [S.S.C MTS 13/07/2022 (Afternoon)]

(a) ni
(b) ri
(c) wi
(d) si

Correct Answer: (d) si

Solution:From the code language "si ni gi" and "ri si wi", we get the code of "tennis" = si

25. In a certain code language, ‘BASEBALL’ is written as ‘45’ and ‘FEEDBACK’ is written as ‘73’. How will ‘PRACTICE’ be written in that language? [S.S.C MTS 20/07/2022 (Morning)]

(a) 27
(b) 37
(c) 57
(d) 47

Correct Answer: (c) 57

Solution:Add the place value of each letter and then reverse the result.
BASEBALL = (2 + 1 + 19 + 5 + 2 + 1 + 12 + 12) = 54
If we reverse digits of 54 we get 45

FEEDBACK = (6 + 5 + 5 + 4 + 2 + 1 + 3 + 11) = 37
If we reverse digits of 37 we get 73

PRACTICE = (16 + 18 + 1 + 3 + 20 + 9 + 3 + 5) = 75
If we reverse digits of 75 we get 57

26. In a certain code language, ‘That was his sister’ is coded as ‘Bo Uv Zs Mn’, ‘This was his cat’ is coded as ‘Zs Pt Uv Ga’ and ‘That was my father’ is coded as ‘Bo Uv Ex Yz’. What is the code for ‘sister’ in this code language? [S.S.C MTS 21/07/2022 (Morning)]

(a) Bo
(b) Mn
(c) Zs
(d) Uv

Correct Answer: (b) Mn