4 is a composite number (2 x 2), and it is less than 5.
6
39
For a number to be both a square and a cube, it would have to be a sixth power. There are three sixth powers less than 100: 0^6 = 0, 1^6 = 1 and 2^6 = 64.
It is 10
6
4 is a composite number (2 x 2), and it is less than 5.
99 is the largest composite number less than 100: its prime factorisation is 3 x 3 x 11
899.
598
6
398?
It is: 299 which has more than 2 factors
21, 42, 63. 84
47 - 12 = 35
Just 63
Just 72.