What will come in place of the question mark (?) in the following number series?
5, 9, 17, 29, 45, ?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 65
Look at the difference between each pair of terms. The differences are the multiples of 4 in order:
\(9-5=4\)
\(17-9=8\)
\(29-17=12\)
\(45-29=16\)
The next difference is 20, so the missing term is \(45+20=65\).