Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2007-03-20 07:43:18

Zev
Guest

nCr help?

Find n:

nC5 = nC7

#2 2007-03-20 08:13:13

JaneFairfax
Member
Registered: 2007-02-23
Posts: 6,868

Re: nCr help?

You know that

So find n such that 5 = n − 7. smile

Offline

Board footer

Powered by FluxBB