Question

find the value of n if 3×np4(5×n-1)p4​

Answer 1

Answer:

10

Step-by-step explanation:

3(n)(n-1)(n-2)(n-3)=5(n-1)(n-2)(n-3)(n-4)

(cancelling all common factors)

3n=5(n-4)

3n=5n-20

2n=20

n=20