Choose the missing term out of the given alternatives:
E4, G9, J25, O49, V121, ?, T289
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → G169
In a letter-number series, the letters and the numbers follow separate rules, so they are checked one at a time.
Numbers 4, 9, 25, 49, 121, ?, 289 are the squares of the primes 2, 3, 5, 7, 11, ?, 17, so the missing number is \(13^2=169\)
Letters E (5), G (7), J (10), O (15), V (22): the gaps are +2, +3, +5, +7, again the primes in order
Next gap +11: \(22+11=33\); counting on past Z, \(33-26=7\), which is G
The gap after that, +13, gives \(7+13=20\), which is T, the last term