Which number comes next in the following series?
32, 80, 200, 500, 1250, ?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 3125
Each term is 5/2 times the term before (the terms grow by half and more each time):
\(32\times\frac{5}{2}=80\)
\(80\times\frac{5}{2}=200\)
\(200\times\frac{5}{2}=500\)
\(500\times\frac{5}{2}=1250\)
\(1250\times\frac{5}{2}=3125\)
So the next number is 3125.