Question

2,3,3,5,10,13,39, ? ,172,177

Answer 1

Start with 2, add 1, multiply by 1, add 2, multiply by 2, etc. 2 2+1=3 3×1=3 3+2=5 5×2=10 10+3=13 13×3=39 39+4=43 43×4=172 172+5=177

Answer 2

Answer :

The Missing number of the series is 43.

Step by step explanation :

Hey Mate,

Given Series :  2, 3, 3, 5, 10, 13, 39, X , 172, 177

Logic Behind the series : First Add no. and then multiply no. . ( Series is be like +1 , ×1, +2 , ×2, +3 , ×3, +4 , ×4, +5 , ×5, +6 , ×6 . . . . . . )

#1

2 + 1 = 3

#2

3 × 1 = 3

#3

3 + 2 = 5

#4

5 × 2 = 10

#5

10 + 3 = 13

#6

13 × 3 = 39

#7

39 + 4 = 43

#8

43 × 4 = 172

#9

172 + 5 = 177

So,

The Missing number of the series is 43.