Number Series Ques 131

Question-

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

$ 116\quad ? \quad 111 \quad 13191 \quad 171$

(1) 111

(2) 121

(3) 119

(4) 115

(5) 124

Show Answer

Correct Answer: (2)

Solution: (2)

The pattern is:

$116+5=121$

$121-10(=2 \times 5)=111$

$111+20(=2 \times 10)=131$

$131-40(=2 \times 20)=91$

$91+80(=2 \times 40)=171$