Number Series Ques 140

Question-

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

$40 \quad 59 \quad 97 \quad 173 \quad 325 \quad ? $

(1) 629

(2) 529

(3) 539

(4) 641

(5) 635

Show Answer

Correct Answer: (1)

Solution: (1)

The pattern is:

$40+19=59$

$59+2 \times 19=59+38=97$

$97+2 \times 38=97+76=173$

$173+2 \times 76=173+152=325$

$325+2 \times 152=325+304$ $=629$