Select the option which will correctly replace the question mark?
A7 C13 F18 J22 O25 ?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → U27
Each term is a letter followed by a number, and the two parts follow separate patterns. Letters are read by their place in the alphabet (A = 1, C = 3, F = 6, J = 10, O = 15).
Letters: A, C, F, J, O move forward by +2, +3, +4, +5; the next step is +6, so O (15) + 6 = 21 = U
Numbers: 7, 13, 18, 22, 25 increase by +6, +5, +4, +3; the next step is +2, so 25 + 2 = 27