Number Series Ques 180
Question-
What will come in place of the question mark (?)
$23 \quad 42.2 \quad 80.6 \quad 157.4 \quad 311\quad ?$
(1) 618.2
(2) 623.2
(3) 624.2
(4) 616.6
(5) None of these
Show Answer
Correct Answer: (1)
Solution: (1)
The pattern is:
$23+1 \times 19.2=42.2$
$42.2+2 \times 19.2=80.6$
$80.6+4 \times 19.2=157.4$
$157.4+8 \times 19.2=311$
$311+16 \times 19.2=311+307.2$ $=618.2$