If npr=840 and nCr=35 then find the value of r
Answers
Answered by
6
Answer:
Step-by-step explanation:
n! /r! (n-r)! =35
n! /(n-r)! =840
35r!(n-r)! = 840(n-r)!
r! = 840/35
r! = 24
r = 4
Answered by
2
Answer:
r = 4
Step-by-step explanation:
n! /r! (n-r)! =35
n! /(n-r)! =840
35r!(n-r)! = 840(n-r)!
r! = 840/35
r! = 24
r = 4
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