Question

{2,6} , {5,35} , {11,143} , {17,323} , {23,?}

Answer 1

2, 2*3= 6

I think here

(2, 8)

2, 2*4=8

5, 5*7=35

11, 11*13=143

17, 17*19= 323

23, 23*25=625

answer is 625