What is next number of series 60, 51, 53, 77, ..... ?

M4maths Previous Puzzles

12 Dec 2016 Sequence

What is next number of series
60, 51, 53, 77, ..... ?

OPtion

1) 151
2) 253
3) 357
4) 161
5) 263
6) 337
7) 143
8) 237
9) 341
10)147

Solution

Series is formed by multiplication of 2 consecutive prime numbers followed by reversing their digits = Reverse [nth Prime No. * (n+1)th Prime number]
So Reverse [2*3, 3*5, 5*7, 7*11] = Reverse [06, 15, 35, 77] = 60, 51, 53, 77
So next number would be Reverse [11*13] = Reverse [143] = 341

Option 9)

Correct Option: 9 Best Solution (0)