
Mark M. answered 05/03/21
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Mathematics Teacher - NCLB Highly Qualified
a) 20 x 19! = 20!
b) 90 x 9! = 9 x 10!
Ally J.
asked 05/03/211.a) 20x19! For this one, would it be since (5x4=20) it would be 5x4x19x18x17....1?
b) 90x9!
Please help I don't understand how to do these. Give full explanation if you can. thanks.
Mark M. answered 05/03/21
Mathematics Teacher - NCLB Highly Qualified
a) 20 x 19! = 20!
b) 90 x 9! = 9 x 10!
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Ally J.
I dont understand05/03/21