`JdotI f^n C_30=^n C_4,f i n dn`

If \ ^n C_(10)=\ \ ^n C_(12) f i n d ^(23)C_n

If ^(n)C_(4)=^(n)C_(6),f in d^(12)C_(n)

If ^(n)C_(10)=^(n)C_(12)f in d^(23)C_(n)

If ^(2n)C_(3):^(n)C_(2)=44:3,f in dn

If ^(n+2)C_(8)*^(n-2)P_(4)=57:16,f in dn

If f(n)=1^2+2.2^2+3^2+2.4^2+5 .6^2+2.6^2+...+ n terms ,then (A) f(n)= (n(n+1)^2)/2 , if n is even (B) f(n)= (n^2(n+2)^2)/2, if n is even (C) f(n)= (n^2(n+1))/2 , if n is odd (D) f(n)= (n(n+3)^2)/2 if n is odd

The temperature of an open room of volume 30 m^(3) increases from 17^(@)C to 27^(@)C due to sunshine. The atmospheric pressure in the room remains 1 xx 10^(5) Pa . If n_(i) and n_(f) are the number of molecules in the room before and after heating then n_(f) and n_(i) will be

The temperature of an open room of volume 30 m^(3) increases from 17^(@)C to 27^(@)C due to sunshine. The atmospheric pressure in the room remains 1 xx 10^(5) Pa . If n_(i) and n_(f) are the number of molecules in the room before and after heating then n_(f) and n_(i) will be

If f(x+1)+f(x-1)=2f(x)a n df(0),=0, then f(n),n in N , is nf(1) (b) {f(1)}^n (c) 0 (d) none of these

If f(x+1)+f(x-1)=2f(x)a n df(0),=0, then f(n),n in N , is nf(1) (b) {f(1)}^n (c) 0 (d) none of these