Number Series Ques 99

Question-

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

$23 \quad 11 \quad 10 \quad 13.5 \quad 25 \quad ?$

(1) 90

(2) 45

(3) 50

(4) 75

(5) 60

Show Answer

Correct Answer: (5)

Solution: (5)

The pattern is:

$23 \times 0.5-0.5=11.5-0.5=11$

$11 \times 1-1=11-1=10$

$10 \times 1.5-1.5=15-1.5=13.5$

$13.5 \times 2-2=27-2=25$

$25 \times 2.5-2.5=62.5-2.5$ $=60$