Question

Which number is missing in the following series? $2,5,10,17,26,37,50,\_\_$

• A. $65$
• B. $55$
• C. $70$
• D. $57$

Answer 1

The correct option is A

$65$

Determine the missing number in the following series.

$2,5,10,17,26,37,50,\_\_$

By observing the above-given series, the numbers are obtained by adding $3,5,7,9,\dots$

$$\begin{gathered} 2+3=5 \\ 5+5=10 \\ 10+7=17 \\ 17+9=26 \\ 26+11=37 \\ 37+13=50 \\ 50+15=65 \end{gathered}$$

Hence, the correct choice is “Option A”.