Find the value of n in each of the following cases :
if `.^(n)C_(n-2)=21`

Find the value of n in each of the following cases : if .^(n)C_(n-4)=70

Find the value of n in each of the following cases : if .^(20)C_(3n)=^(20)C_(2n+5)

Find the value of n in each of the following cases : if .^(2n)C_(4):^(n)C_(3)=35:2

Find the value of n in each of the following cases : if .^(n)C_(5)=^(n)C_(9)

Find the value of ‘n’ in each of the following : 2^(2n+1) div 2^(-3) = (1)/(2^(2)

Find the value of n in each of the following: (i) 8xx2^(n+2)=32 (ii) 7^(2n+1)-:49=7^3

Find the value of n in each of the following: (2^2)^n=(2^3)^4 (ii) 2^(5n)-:2^n=2^4 (iii) 2^n^(-5)xx5^n^(-4)=5

Find the value of n in each of the following: (2^2)^n=(2^3)^4 (ii) 2^(5n)-:2^n=2^4 2^n^(-5)xx5^n^(-4)=5

Find the value of 'n' in each of the following : (2/3)^3xx(2/3)^5=(2/3)^(n-2)

Find the value of n in each of the following: 8xx2^n^(+2)=32 (ii) 7^(2n)^(+1)-:49=7^3