If n(A)=2,then find the value of `n(P(A))`

Find the value of .^(n-1)C_(n-1)

If .^(m+n)P_2=72 and .^(m-n)P_2=6 ,then find the values of m and n.

Find the value of n if |_n =|_(n-1)

If lim_(xrarr2)(x^n-2^n)/(x-2)=80 and if n in N ,find the value of n.

Find the value of n if ""^nC_(n-1)=5 .

If three successive coefficients in the expansion of (1 + x)^n are 220, 495 and 792 respectively, find the value of n

If n(A-B)=10,n(AnnB)=5 and n(B-A)=20 ,then find n(B) and n(AuuB) .

If x= -4/3 , 7/5 are the roots of the equation mx^2+nx-28=0 ,find the value of m.n

Find the value of n if ^nP_5=42^nP_3,n>4

Find the value of n if ^nP_5:^nP_3=2:1 .