Hot Student Stories
top-5-grammar-and-spelling-checkers-to-rock-in-2019

What is the value of 7P3 ? A. 21 B. 35 C. 210 D. 840 i think a but idk

Victoria Fowler

in Mathematics

follow
followin
1 answer
6 views

1 answer


Rodney Fox on September 4, 2018

The answer is C. Here's why, nPr = n!/(n-r)!. Plug in 7 for n and 3 for r. And you get 7!/(7-3)!.As well, 7!/4! = (7*6*5*4*3*2*1)/(4*3*2*1), that simplifies to 7*6*5 = 210


Add you answer