Question

explain why 7× 11×13 + 13 and 7×6× 5×4 ×3× 2×1 + 5 are composite numbers ​

Answer 1

Step-by-step explanation:

1. 7 into 11 into 13 + 13
2. 13 ( 7 ×11×1+1)
3. 13(7×11+1)
4. 13×78×1 ..( every no. have 1as it factor)
5. so, it has more than two factor so it is composite..☻☻