Question

if(n+2)p3 : (n+1)p3 =10:7 , then find n ?​

Answer 1

Answer:

n=8

Explanation:

(n+2)!/(n+2-3)! : (n+1)!/(n+1-3)! = 10/7

after solving this u get

(n+2)/(n-1) = 10/7

7n+14=10n-10

3n=24

n=8