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

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 a fixed number of times. If the probability of getting seven heads is equal to that of getting nine heads, the probability of getting two heads is a. 15/2^8 b. 2/15 c. 15/2^(13) d. none of these

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

Find : a. 4 (5)/(13)- 3 (7)/(13) + 2 (8)/(13)

If z=1/((2+3i)^2), then |z| is (a) . 1/13 (b) . 1/5 (c) . 1/12 (d) . none of these

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

The reciprocal of the fraction 2 3/5 is (a) 2 5/3 (b) (13)/5 (c) 5/(13) (d) 2 2/5

The median of first 10 prime numbers is (a) 11 (b) 12 (c) 13 (d) 14

Suppose that two cards are drawn at random from a deck of cards. Let X be the number of aces obtained. Then the value of E(X) is(A) (37)/(221) (B) 5/(13) (C) 1/(13) (D) 2/(13)

Work out the following : 7/13+2/13-5/13