Question

if p(n,r )=36 and p(n,r)=65 then find the value of n and r of combination

Answer 1

Step-by-step explanation:

HERE IS YOUR ANSWER

nPr = 336 and nCr = 56

We know that :

nPr = r! x nCr

=> 336 = r! × 56

=> r! = 336/56 = 6

So, r! = 3!

Then, we have :

nPr = 336

=> nP3 = 8P3

Therefore, comparing, we get :

n = 8.

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