Question

Which of the following numbers has an odd number of positive factors

A) 12
b) 24
c) 36
d) 48

Answer 1

c) 36

Step-by-step explanation:

Factors of 12 are 1, 2, 3, 4, 6, 12 (6 factors)

Factors of 24 are 1 , 2, 3, 4, 6, 8, 12, 24 (8 factors)

Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, 36 (9 factors)

Factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48 (10 factors)

So 36 has 9 factors which is an odd number