The sum of `1^3+2^3+3^3+....+15^3` is (A) 22000 (B) 10000 (C) 14400 (D) 15000

The sum of the series 1^(3) + 2 ^(3) + 3^(3) + ...+15^(3) is

The incomes of A andB are in the ratio of 3 : 2 and their expenditures are 14,000 and 10,000 respectively. If A save 4000, then B savings will be (A) 4000 (B) 3000 (C)2000 (D)15000

4 1/3-2 1/3= (a) 2 1/3 (b) 2 (c) 3 1/3 (d) 1/2

The value of (1-tan^2 15^@)/(1+tan^2 15^@)= (A) 1 (B) sqrt(3) (C) sqrt(3)/2 (D) 2

Let a_(1),a_(2),a_(3)"……." be an arithmetic progression and b_(1), b_(2), b_(3), "……." be a geometric progression sequence c_(1),c_(2),c_(3,"…." is such that c_(n)= a_(n) + b_(n) AA n in N . Suppose c_(1) = 1, c_(2) = 4, c_(3) = 15 and c_(4) = 2 . The value of sum of sum_(i = 1)^(20) a_(i) is equal to "(a) 480 (b) 770 (c) 960 (d) 1040"

1-:1/3= (a) 1/3 (b) 3 (c) 1 1/3 (d) 3 1/3

3, 7, 6, 5, 9, 3, 12, 1, 15, (......) (a) 18 (b) 13 (c) -1 (d) 3

If a=3^(-3)-3^3\ a n d\ b=3^3-3^(-3),\ t h e n a/b-b/a (a) 0 (b) 1 (c)-1 (d) 2

If a=3^(-3)-3^3\ a n d\ b=3^3-3^(-3),\ t h e n a/b-b/a (a) 0 (b) 1 (c)-1 (d) 2