`sin{2\ cos^(-1)(-3/5)}` is equal to (a) `6//25` (b) `24//25` (c) `4//5` (d) `-24//25`

6^5 x 6^5 is equal to: (a) 36^5 (b) 6^25 (c) 6^5 (d) 12^5

If int_(0)^(x)f(t)dt=x^2+int_(x)^(1)\ t^2\ f(t)dt , then f((1)/(2)) is equal to (a) (24)/(25) (b) (4)/(25) (c) (4)/(5) (d) (2)/(5)

((-2)/5)^7-:((-2)/5)^5 is equal to (a) 4/(25) (b) (-4)/(25) (c) ((-2)/5)^(12) (d) (25)/4

(-29)+5 is equal to: (a)24 (b) 34 (c) -34 (d) -24

12% as a fraction is (a) 3/(25) (b) 4/(25) (c) 3/(20) (d) 6/(25)

(2/3)^(-5)x\ (5/7)^(-5) is equal to (a) (2/3x5/7)^(-10) (b) (2/3x5/7)^(-5) (c) (2/3x5/7)^(25) (d) (2/3x5/7)^(-25)

In Delta ABC if r_1=2r_2=3r_3 and D is the mid point of BC then Cos/_ADC is (a) 7/25 (b) -7/25 (c) 24/25 (d) -24/25

If 10^(2y)=\ 25\ , then 10^(-y) equals (a) -1/5 (b) 1/(50) (c) 1/(625) (d) 1/5

The value of cot(sum_(n=1)^23 cot^-1(1+sum_(k=1)^n 2k)) is (a) 23/25 (b) 25/23 (c) 23/24 (d) 25/26

5/8+3/4-7/(12) is equal to: (a) (15)/(24) (b) (17)/(24) (c) (19)/(24) (d) (21)/(24)