Question

check whether 5 x 6 x 2 x 3 + 3 is a composite no.

Answer 1

5×6×2×3+3

=3[5×6×2×1+1]

=3(60+1

=3(61)

As it is expressed as the product of two primes,it is a composite number.

So,5×6×2×3+3 is a composite number.

Answer 2

5×6×2×3+3

= 3(5×6×2×1+1)

= 3 (60+1)

= 3 (61)

As it is expressed as a product of two primes so, according to FTA it is a composite number.