Question

State true or false for the following statement and justify your answer:

2 × 3 × 5 × 7 + 7 is a composite number

Answer 1

This statement is true.

Explanation:

2 × 3 × 5 × 7 + 7 = 210 + 7

= 217

= 7 × 31 

So it has factors 7 and 31 and is therefore composite.