Each of these factor pairs (multiply the numbers in parentheses) equals 225: (1, 225) (3, 75) (5, 45) (9, 25) (15, 15)
One pair: it's a prime number.
Eight of them.
Two of them.
Three of them.
225,175,345,525,915,15
The factor pairs of 225 are 1 x 225, 3 x 75, 5 x 45, 9 x 25, and 15 x 15
1x225, 3x75, 5x45, 9x25, 15x15
Sixteen factor pairs.
1 x225 ,3x 75, 5x45,9x25,15x15 I think those are all of them
30 has four factor pairs:30,115,210,36,5
20 has 3 factor pairs. Pairs are (1,20), (2,10) and (9,9)
12 has 3 factor pairs and the pairs are (1,12), (2,6) and (3,4).
Each of these factor pairs (multiply the numbers in parentheses) equals 225: (1, 225) (3, 75) (5, 45) (9, 25) (15, 15)
15 of them.
-53
76 has 3 factor pairs: (1,76), (2,38), (4,19).