PUZZLE-1

FIND THE NUMBER IN FOLLOWING NUMBER SERIES

   

ANSWER: 74
SOLUTION:
In the given series multiply every number by 2 and followed by addition of 1,2,3,4,5...
3*2=6+1=7,
7*2=14+2=16,
16*2=32+3=35,
35*2=70+4=74.