Posted by **Dee** on Friday, August 28, 2009 at 3:57pm.

Need a verification:

Combinations of n items taken r at a time: C9n,r)= n!/(n-r)!*r!

C(8,0)

8!/(8-0)!*(0)! = 8!/8!*0! = 0 or Answer is 0 or 1?

- Math: Permutations and Combinations -
**MathMate**, Friday, August 28, 2009 at 4:42pm
The formula is correct, noting the parentheses, i.e.

C(n,r) = n!/((n-r)!r!)

Since 0!=1, the expression

8!/((8-0)!*(0)!) = 1

## Answer this Question

## Related Questions

- Math - Hi! Can someone check my answers? Thanks!! Directions: Tell whether the ...
- Math - Hi! Can someone check my answers? Thanks!! Directions: Tell whether the ...
- statistics - 15. The probability that a recently offered stock by a technology ...
- maths - simplify 8C5 The "C" stands for combinations ( like combinations and ...
- Math - For the three-letter set {R, S, T}, find the two-letter combinations. I ...
- math - Compute: The number of combinations of 8 elements taken 3 at a time. The ...
- Finite Math - Please help with this problem. In a student writing contest with ...
- Math - We are working on permutations and combinations and the problem reads as ...
- statistics - 17. All three‐digit numbers that can be formed using the ...
- Math - Teng is designing a house and in each room he can choose from tiles, ...

More Related Questions