Originally Posted by

**Awareness** My math is not good and I am not sure in which forum section I should post my question.

Let's say I want to group numbers between 1 and 50 with 4 columns:

1 2 3 4

1 2 3 5

1 2 3 6...

2 3 4 5

2 3 4 6

...

47 48 49 50

To find the total possible combinations,we do:

50*49*48*47

__________

1*2*3*4

This formula gives the maximum possible combinations.

My question is,what would the formula be to find maximum of how many combinations of

these numbers include number 1 and 2(for example)?