Question : Directions: Which term from among the given options can replace the question mark (?) in the following series to make it logically complete?
EZ 10, ?, ID 36, KF 49, MH 62
Option 1: HC 21
Option 2: FB 22
Option 3: GB 23
Option 4: FC 21
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Correct Answer: GB 23
Solution :
Given:
EZ 10, ?, ID 36, KF 49, MH 62
Add 2 in the positional value of each letter and add 13 to each number of the previous term to get the next term –
EZ 10→E + 2 = G; Z + 2 = B; 10 + 13 = 23→GB 23
GB 23→G + 2 = I; B + 2 = D; 23 + 13 = 36→ID 23
ID 36→I + 2 = K; D + 2 = F; 36 + 13 = 49→KF 49
KF 49→K + 2 = M; F + 2 = H; 49 + 13 = 62→MH 62
So, the missing term in the series is GB 23. Hence the third option is correct.
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