Home
Class 12
MATHS
If ""^(n)P(r) = 840 and ""^(n)C(r) = 35,...

If `""^(n)P_(r) = 840` and `""^(n)C_(r) = 35`, then r is equal to ………… .

Text Solution

Verified by Experts

The correct Answer is:
4
Promotional Banner

Similar Questions

Explore conceptually related problems

If ""^(n)P_r=720 ""^(n)C_(r) then r is equal to

If .^(n)P_(r) =360 and .^(n)C_(r)=15 , then find the value of r.

If .^(n)P_(r)=720 and .^(n)C_(r)=120 then find the value of r.

If .^(n)P_(r)=840,.^(n)C_(r)=35, then find n=