'99' = 11 x 9 = 3 x 33
4 is a composite number (2 x 2), and it is less than 5.
6
The greatest composite number less than 10 is 8. A composite number is a positive integer that has at least one positive divisor other than one and itself, and 8 meets this criterion as it can be divided by 1, 2, 4, and 8. Other composite numbers below 10 include 4, 6, and 9, but 8 is the largest among them.
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.
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
6
598
398?
899.
It is: 299 which has more than 2 factors
21, 42, 63. 84
47 - 12 = 35
Just 63
Just 72.