Question

Explain why 7*11*13+13 and 7*6*5*4*3*2*1+5 are composite numbers.

Answer 1

let13( 7×11×1)=13(77)=210,and 5(6×5×4×3×2+1)=5(720)=3600

then 210+1=211,3600+1=3601 .so,there are composite number

I HOPE THIS IS HELPFUL TO YOU

Answer 2

composit number are those number who has more 1 factor