Question

15,17,20,25,32,43,?​

Answer 1

15 , 17 , 20 , 25 , 32 , 43 , 56

Answer 2

15+2=17

17+3=20

20+5=25

25+7=32

32+11=43

43+13=56

2,3,5,7,11,13,15 are the prime numbers

Hope it helps you..