Number Series Ques 221

Question-

What will come in place of the question mark (?)

$158 \quad 78 \quad 38 \quad 18 \quad 8 \quad$ ?

(1) 3

(2) 5

(3) 2

(4) 7

(5) 6

Show Answer

Correct Answer: (1)

Solution: (1)

The pattern is:

$ \begin{aligned} & \frac{158}{2}-1=79-1=78 \\ & \frac{78}{2}-1=39-1=38 \\ & \frac{38}{2}-1=19-1=18 \\ & \frac{18}{2}-1=9-1=8 \\ & \frac{8}{2}-1=4-1=3 \end{aligned} $