Three times a number n can be written as 3n. If n equals the number 5, then what does 3n equal?

When we have a number n, and we multiply it by 3, we write it as 3n. In this case, n is given as 5. So, we substitute 5 for n in the expression 3n.

Let’s calculate it step by step:

1. We know that n = 5.
2. Substitute n with 5 in the expression 3n: 3 × 5.
3. Multiply 3 by 5: 3 × 5 = 15.

Therefore, when n = 5, 3n equals 15.