I don't know what Ord7 is, but in 52! there is floor(52/49)=1 multiple of 7^2=49, and floor(52/7)=7 multiples of 7 (including 49), so that makes 8 factors of 7.

Is that what you were looking for?

Results 1 to 2 of 2

- March 10th 2010, 10:19 PM #1

- Joined
- Feb 2008
- Posts
- 535

- March 12th 2010, 11:56 PM #2

- Joined
- Mar 2010
- Posts
- 1,010
- Thanks
- 252