Choose the number that will come next in the following series.
4, 8, 11, 22, 25, 50, ?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 53
The steps are not all of one kind, so test two operations in turn: ×2 and +3 alternately.
\(4\times2=8\), \(8+3=11\)
\(11\times2=22\), \(22+3=25\)
\(25\times2=50\)
The next step is +3: \(50+3=53\)
So the next number is 53.