Two.
The factor pairs of 25 are 1 x 25 and 5 x 5
1 and 25 5 and 5
Sixteen factor pairs.
(1, 25) (5, 5)
1x25 5x5
The factor pairs of 25 are: 1 × 25 5 x 5
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).
1 x 25, 5 x 5, 25 x 1
The factor pairs of 125 are 1 x 125 and 5 x 25
1 = 1 * 125 = 1*25, 5*5