Correct Answer: 4 – 75

Solution : Given:
SPACE is written as 5 – 91 and ROTTEN is written as 6 – 70.

The first number is equal to the total number of letters and the second number is equal to the sum of the opposite position value of the letters of SPACE, to obtain the required code –
Total number of letters in SPACE = 5
Opposite position value of the letters of SPACE→S = 8(H); P = 11(K); A = 26(Z); C = 24(X); E = 22(V)
The sum of the opposite position values→8 + 11 + 26 + 24 + 22 = 91
Thus, SPACE is coded as 5 – 91.
And, ROTTEN is written as 6 – 70→
Total number of letters in ROTTEN = 6
Opposite position value of the letters ROTTEN→R = 9(I); O = 12(L); T = 7(G); T = 7(G); E = 22(V); N = 13(M)
The sum of the opposite position values→9 + 12 + 7 + 7 + 22 + 13 = 70
Thus, ROTTEN is coded as 6 – 70.
Similarly, follow the same pattern for MEAN→
Total number of letters in MEAN = 4
Opposite position value of the letters MEAN→M = 14(N); E = 22(V); A = 26(Z); N = 13(M)
The sum of the opposite position values→14 + 22 + 26 + 13 = 75

So, MEAN is coded as 4 – 75. Hence, the first option is correct.