Stings with four factor that make 840
840=2*2*2*3*5*7
2 x 420 3 x 280 4 x 210 5 x 168 6 x 140
There are a lot like 3x56x5 and there are a thousand more but i just don't want to write them all :)
3 x 5 x 7 x 8 2 x 6 x 7 x 10
Stings with four factor that make 840
840=2*2*2*3*5*7
8x3x5x7, 28x10x3 there are a ton more but don't have time to write them
2 x 420 3 x 280 4 x 210 5 x 168 6 x 140
There are a lot like 3x56x5 and there are a thousand more but i just don't want to write them all :)
Only one can be longest.
Only one can be longest. 2 x 2 x 2 x 3 x 5 x 7
2 x 2 x 2 x 3 x 5 x 7
32 is not a factor of 840.
3 x 5 x 7 x 8 2 x 6 x 7 x 10
actually 7 is a factor of 840, because when you divide 7 into 840 you get 120 with no remainders therefore making it a factor of 840.🤡
36 of them.