If `2^(n+4)-2^(n+2)=3,` then `n` is equal to a. `0` b. `2` c. `-2` d. `-1`

If 2^(n+4)-2^(n+2)=3, then n is equal to a.0 b.2c.-2d.-1

If ""^(n+1)C_(3)=4(""^(n)C_(2)) , then n is equal to

If (1^2-t_1)+(2^2-t_2)+---+(n^2-t_n)=(n(n^2-1))/3 , then t_n is equal to a. n^2 b. 2n c. n^2-2n d. none of these

(lim)_(n->oo)(n !)/((n+1)!+n !) is equal to a. 1 b . 0 c. 2 d. 1/2

[(. ^nC_0+^n C_3+)-1/2(.^n C_1+^n C_2+^n C_4+^n C_5]^2 + 3/4(.^n C_1-^n C_2+^n C_4 +)^2= equals to a. 3 b. 4 c. 2 d. 1

If 2^(2n-1)=(1)/(8^(n-3)), then the value of n is a -2 b.2 c.0 d.3

If A-B=pi//4 , then (1+t a n A)(1-t a n B) is equal to 2 b. 1 c. 0 d. 3

(lim)_(n->oo)(1^2+2^2+3^2++n^2)/(n^3) is equal to a. 1 b . c. 1/3 d. 0

If D_k=1nn2k n^2+n+1n^2+n2k-1n^2n^2+n+1a n dsum_(k=1)^n D_k=56. then n equals 4 b. 6 c. 8 d. none of these

If D_k=1nn2k n^2+n+1n^2+n2k-1n^2n^2+n+1a n dsum_(k=1)^n D_k=56. then n equals 4 b. 6 c. 8 d. none of these