Question

Which of the following numbers is composite?(a) 5(b) 19(c) 71(d) 85​

Answer 1

Answer:

85

Step-by-step explanation:

A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Equivalently, it is a positive integer that has at least one divisor other than 1 and itself. ... For example, the integer 14 is a composite number because it is the product of the two smaller integers 2 × 7.

5=5,1

5=5,119=19,1

5=5,119=19,171=71,1

5=5,119=19,171=71,185=1,5,17,85

Therefore 85 is a composite number