A bag contains 7 tickets numbered 0,1,2,...6. Four tickets are drawn one by one with replacement. The probability that
the sum of the numbers on them is 8, is
Out of 13 group application for a job, there are 5 women and 8 men. It is desired to select to persons for the job. The
probability that at least one of the selected persons will be a women is
A pack of playing cards was found to contain only 51 cards. If the first 13 cards which are examined are all red, Then
the probability that the missing card is black , is
A and B stand in ring along with 10 other persons. If the arrangement is at random, the probability, that there are
exactly 3 person between A and B, is
A 4-digit number is formed with the digits from 1,2,3,4,5, without repetition. The probability that it is divisible by 3 is
One Indian and four American men and their wives are to be seated randomly around a circular table. Then the
conditional probability that the Indian man is seated adjacent to his wife given that each American man is seated
adjacent to his wife, is
The mean and variance of a binomial distribution are 4 and 3 respectively, then the probability of getting exactly six
successes in this distribution is
None of these
A fair coin is tossed n times. If X is the number of times heads occur and P(X = 4), P(X = 5), P(X = 6) are in AP, then n is equal to
13
7
11
One function is selected from all the functions F:S→S, where S={1,2,3,4,5,6}. The probability that it is onto function is
Consider the following statements
(1)Mode can be computed from histogram
(2)Median is not independent of change of scale
(3)Variance is independent of change of origin and scale
Which of these is / are correct?
Only (1)
Only (2)
Only (1) and (2)
(1), (2) and (3)