Number Series Ques 102

Question-

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

$7\quad 4\quad 5\quad 12\quad 52\quad ?$

(1) 424

(2) 428

(3) 318

(4) 440

(5) 432

Show Answer

Correct Answer: (1)

Solution: (1)

The pattern is:

$7 \times 0.5+0.5=3.5+0.5=4$

$4 \times 1(=0.5 \times 2)+1=4+1=5$

$5 \times 2(=1 \times 2)+2=10+2=12$

$12 \times 4(=2 \times 2)+4=48+4=52$

$52 \times 8(=4 \times 2)+8=416+8$ $=424$