Question

15,66,132,363,726,? Next number is

Answer 1

Step-by-step explanation:

15

15+51=66

66+66=132

132+231=363

363+363=726

726+627=1353

so next no. will be 1353.

Answer 2

Here the number will be  according to this sequence  :-

(number itself + reverse of that number)

15

15 +51= 66

66 +66= 132

132 +231= 363

363 + 363= 726

726 +627 = 1353

Hence =726+627=1353 will be the next number on this series.