Question

Find the missing number.

$1,1,2,2,3,4,4,8,5,16,?$

• A. $6$
• B. $32$
• C. $8$
• D. $7$

Answer 1

Answer: (A)

$6$

The given series: 1, 1, 2, 2, 3, 4, 4, 8, 5, 16, ? consists of two series.
1st series: 1, 2, 3, 4, 5, ? 2nd series: 1, 2, 4, 8, 16
In the 1st series, the each of the next number is one more than the previous number.
In the 2nd series, each of the next number is twice of the previous number.
Clearly, 5 + 1 = 6
Hence, option (A) is the correct answer,