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

A fair coin is tossed 100 xx.The probability of getting tails 1,3,..49 xx is 1/2 b.1/4 c.1/8 d.1/16

Two cards are drawn from a well shuffled deck of 52 playing cards with replacement. The probability that both cards are queen is 1/(13)xx1/(13) b. 1/(13)+1/(13) c. 1/(13)xx1/(17) d. 1/(13)xx4/5

Solve : 4/(13)+2/(13)+1/(13)

What is the ratio of the speeds of vehicle D and vehicle E on Day 2?( a) 15:13 (b) 17:13 (c) 13:11 (d) 17:14 (e) None of these

If the perimeter of a circle is equal to that of a square, then the ratio of their areas is (a) 13\ : 22 (b) 14\ : 11 (c) 22\ : 13 (d) 11\ : 14

In triangleABC , if a=13, b=14, c=15 , then cosB=

If (FIGURE),the values of a and b are 1,2 (b) 2,3quad (c) 1,3 (d) None of these

The distance of the point (2,1,-1) from the plane x-2y+4z=9 is (A) sqrt(13)/21 (B) 13/21 (C) 13/sqrt(21) (D) sqrt(13/21)

The distance of the point (2,1,-1) from the plane x-2y+4z=9 is (A) sqrt(13)/21 (B) 13/21 (C) 13/sqrt(21) (D) sqrt(13/21)