Question

1,5,7,17,31, ?
a) 63
b) 64
c) 62
d) 65​

Answer 1

Answer:

61 is the write answer but you did not gave the option there

Answer 2

Answer:

=>1,1×2+3=5,5×2-3=7,7×2+3=17,17×2-3=31,31×2+ 3=65

=> 1,5,7,17,31,65