Question

Choose the missing number in the series: $2,2,3,4,4,$__$,6,6,7,8,8,\mathrm{9....}$

• A. 5
• B. 6
• C. 7
• D. 8

Answer 1

The correct option is A 5

This is a continuous series of adding $1$ to the previous number, in which every third number is not repeated.
So, the missing number is $5$.