1*2*3*4=24
2)490 5)245 7)49 7)7 = 1 When reduced to '1' Then the four numbers are 2,5,7,7. All prime numbers.
6x4x2
3 x 5 x 7 x 7
(15,3)(9,5)
5x5x5x3=375
1*2*3*4=24
3
2 x 2 x 3 x 3
2)490 5)245 7)49 7)7 = 1 When reduced to '1' Then the four numbers are 2,5,7,7. All prime numbers.
It takes four. 3 x 3 x 3 x 3 = 81
6x4x2
They can be: 27 times 5 = 135
3 x 5 x 7 x 7
(15,3)(9,5)
5 and 2
As a product of its prime factors: 3*3*3*11 = 297 or as 1*1*1*297 = 297