South African cricket captain lost toss of a coin 13 times out of 14. The chance of this happening was a. `7//2^(13)` b. `1//2^(13)` c. `13//2^(14)` d. none

A cricket club has 15 members, of them of whom only 5 can bowl. If the names of 15 members are put into a box and 11 are drawn at random, then the probability of getting an eleven containing at least 3 bowlers is 7//13 b. 6//13 c. 11//158 d. 12//13

The geometric mean between -9 and -16 is a. 12 b. -12 c. -13 d. none of these

If x ,2x+2 and 3x+3 are the first three terms of a G.P., then the fourth term is a. 27 b. -27 c. 13.5 d. -13.5

The radius of the tangent circle that can be drawn to pass through the point (0, 7) and (0, 6) and touching the x-axis is (a) 5/2 (b) 13/2 (c) 7/2 (d) 19/2

Find the slope of the line passing through the given two point A(-1.4, -3.7), B(-2.4, 1.3)

The 15th term of the series 2 1/2+1 7/(13)+1 1/9+(20)/(23)+.... i s (10)/(39) b. (10)/(21) c. (10)/(23) d. none of these

If vec a and vec b are any two vectors of magnitudes 2 and 3, respectively, such that |2( vec axx vec b)|+|3( vec a. vec b)|=k , then the maximum value of k is a. sqrt(13) b. 2sqrt(13) c. 6sqrt(13) d. 10sqrt(13)

The vertices of a triangle are (2,-2) , (4,2) and (-1,3), Find the equation of the madian through (-1,3).

The reflection of the point (4,-13) about the line 5x+y+6=0 is a. (-1,-14) b. (3,4) c. (0,-0) d. (1,2)

The vertices of a parallelogram A B C D are A(3,1),B(13 ,6),C(13 ,21), and D(3,16)dot If a line passing through the origin divides the parallelogram into two congruent parts, then the slope of the line is (a) (11)/(12) (b) (11)/8 (c) (25)/8 (d) (13)/8