Question

which number is composite? 7 13 15 41

Explanation:

Step1: Recall composite number definition

A composite number is a positive integer that has at least one positive divisor other than one and itself. Prime numbers have only 1 and themselves as divisors.

Step2: Analyze each number

• For 7: Divisors are 1 and 7 (prime).
• For 13: Divisors are 1 and 13 (prime).
• For 15: Divisors are 1, 3, 5, 15 (composite, as 3 and 5 are other divisors).
• For 41: Divisors are 1 and 41 (prime).

Answer:

15 (the number 15 is composite among 7, 13, 15, 41)