The probability of selecting a male or a female is same. If the probability that in an office of `n` person `(n-1)` males being selected is `3/(2^(10))`, the value of `n` is a. `5` b. `3` c. `10` d. `12`

From a tank containing 10 male fish and 12 female fish, a fish is taken out, then probability that it is a female fish is?

If sqrt(3^(n))=729, then the value of n is (a)6(b)8(c)10(d)12

There are n person sitting in a row two of them are selected at random the probability that two selected persons are not together is

Let X={1,2,-,10}, if set A and B are formed from elements of X the probability that n(A nn B)=2, is

A mapping is selected at random from all mappings f:A rarr A where set A={1, 2, 3, .... n} If the probability that mapping is injective is 3/32 then the value of n is:

Kamal and Monica appeared for n interview for two vacancies. The probability of Kamal’s selection is 1/3 and that of Monika’s selection is 1/5. Find the probability that Both of them will be selected None of them will be selected At least one of them will be selected Only one of them will be selected.

One mapping is selected at random from all mappings of the set S={1,2,3,...n} into itself.If the probability that the mapping is one-one is 3/32 ,then the value of n is 2 b.3 c.4d .none of these

(n>=5) persons are sitting in a row.Three of these are selected at random.The probability that no two of the selected persons sit together is

The probability that a randomly selected 2-digit number belongs to the set { n in N: (2^(n)-2) is a multiple of 3} is equal to