What will come in place of the question mark (?) in the following number series?
4, 11, 25, 46, 74, ?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 109
When a series grows by uneven steps, look at the difference between each pair of terms. Here the differences are the multiples of 7 in order:
\(11-4=7\)
\(25-11=14\)
\(46-25=21\)
\(74-46=28\)
The next difference is 35, so the missing term is \(74+35=109\).