Question

3 factor string for 840

Answer 1

8 x 15 x 7

24 x 5 x 7

56 x 3 x 5

35 x 3 x 8

Hope that helped :D

Answer 2

Well I have more than 4 but whatever....

2 x 420 
3 x 280 
4 x 210 
5 x 168 
6 x 140 
7 x 120 
8 x 105 
10 x 84 
12 x 70 
14 x 60 
15 x 56 
20 x 24 
21 x 40 
24 x 35 
28 x 30 
2 x 2 x 210 
2 x 3 x 140 
2 x 5 x 84 
2 x 7 x 60 
3 x 5 x 56 
3 x 7 x 40 
5 x 7 x 24 
2 x 2 x 2 x 105 
2 x 2 x 3 x 70 
2 x 2 x 5 x 42 
2 x 2 x 7 x 30 
2 x 3 x 5 x 28 
2 x 3 x 7 x 20 
3 x 5 x 7 x 8 
2 x 2 x 2 x 3 x 35 
2 x 2 x 2 x 5 x 21 
2 x 2 x 2 x 7 x 15 
2 x 2 x 3 x 5 x 14 
2 x 2 x 3 x 7 x 10 
2 x 3 x 4 x 5 x 7 
2 x 2 x 2 x 3 x 5 x 7


Hope I Helped You!!! :-)

Have A Good Day!!!