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HELP PLEASE - Distributive property with !
How does the GMAT book come up with
k(k-1)! = k!
I always come up with (kk!)-k as a result.
I really don't understand how they use distributive property in this one.
- by Alyssa345
Fri Jun 18, 2021 1:53 pm- Forum: Problem Solving
- Topic: HELP PLEASE - Distributive property with !
- Replies: 2
- Views: 496