Number Series Ques 141
Question-
What will come in place of the question mark (?)
2, 3, 10, 39, ?, 885
(1) 70
(2) 85
(3) 145
(4) 172
(5) 210
Show Answer
Correct Answer: (4)
Solution: (4)
The pattern is :
$2 \times 1+1^{2}=2+1=3$
$3 \times 2+2^{2}=6+4=10$
$10 \times 3+3^{2}=30+9=39$
$39 \times 4+4^{2}=156+16=172$
$172 \times 5+5^{2}=860+25=885$
BETA
