Question

explain 7 x 11 x 13 + 13 and 7 x 6 x 54 x 3 x 2 x 1 + 5 are composite numbers​

Answer 1

Step-by-step explanation:

1) 7*9*11*13+13

here 13 is common

=>13(7*9*1+1)

=>13(64)

=>13*2*2*2*2*2*2

so it is composite