`1^2+(1^2+2^2)+(1^2+2^2+3^2),`+……….upto 22nd term is (A) 22368 (B) 23276 (C) 22376 (D) none of these

Sum of the series S=(1^(2))/(1)+(1^(3)+2^(3))/(1+3)+(1^(3)+2^(3)+3^(3))/(1+3+5)+.... upto 9 terms ,is : (A) 48 (B) 96 (C) 71 (D) None of these

IF ax^3+bx^2+cx+d = |(x^2,(x-1)^2, (x-2)^2),((x-1)^2 (x-2)^2, (x-3)^2), (x-2)^2, (x-3)^2, (x-4)^2)| , then d= (A) 1 (B) -8 (C) 0 (D) none of these

((-3)/2)^(-1) is equal to 2/3 (b) 2/3 (c) 3/2 (d) none of these

3/(1^2 2^2)+5/(2^2 3^2)+7/(3^2 4^2)+ . . . upto 10th term

x^((x-1)- 1/2 (x-1)^2+1/3((x-1)^3).- 1/4((x-1)^4).+…….. is equal to (A) 2logx (B) logx (C) x^2 (D) none of these

The set of all values of a for which both roots of equation x^2-2ax+a^2-1=0 lies between -2 and 4 is (A) (-1,2) (B) (1,3) (C) (-1,3) (D) none of these

2-2+2-2+.101backslash terms=?-2(b)0 (c) 2 (d) None of these

The number of terms in the expansion (x^2+ 1/x^2+2)^100 is (A) 3200 (B) ^102C_2 (C) 201 (D) none of these

1+(1+2)/(2)+(1+2+3)/(3)dots upto 20 terms is