Advertisements
Advertisements
प्रश्न
Choose the correct alternative:
There are three events A, B and C of which one and only one can happen. If the odds are 7 to 4 against A and 5 to 3 against B, then odds against C is
पर्याय
23 : 65
65 : 23
23 : 88
88 : 23
उत्तर
65 : 23
APPEARS IN
संबंधित प्रश्न
A family has two children. What is the probability that both the children are girls given that at least one of them is a girl?
Two urns contain the set of balls as given in the following table
| Title | White | Red | Black |
| Urn 1 | 10 | 6 | 9 |
| Urn 2 | 3 | 7 | 15 |
One ball is drawn from each urn and find the probability that
- both balls are red
- both balls are of the same colour.
A die is thrown. Find the probability of getting
- a prime number
- a number greater than or equal to 3
There are 1000 students in a school out of which 450 are girls. It is known that out of 450, 20% of the girls studying in class XI. A student is randomly selected from 1000 students. What is the probability that the selected student is from class XI given that the selected student is a girl?
From a pack of 52 cards, two cards are drawn at random. Find the probability that one is a king and the other is a queen.
A company has three machines A, B, C which produces 20%, 30% and 50% of the product respectively. Their respective defective percentages are 7, 3 and 5. From these products, one is chosen and inspected. If it is defective what is the probability that it has been made by machine C?
The events A and B are independent if
If the outcome of one event does not influence another event then the two events are
Let a sample space of an experiment be S = {E1, E2, ..., En}, then `sum_("i" = 1)^"n" "P"("E"_"i")` is equal to
Probability that at least one of the events A, B occur is
What is the chance that non-leap year
What is the chance that leap year should have fifty three Sundays?
Eight coins are tossed once, find the probability of getting exactly two tails
An integer is chosen at random from the first 100 positive integers. What is the probability that the integer chosen is a prime or multiple of 8?
A bag contains 7 red and 4 black balls, 3 balls are drawn at random. Find the probability that all are red
The odds that the event A occurs is 5 to 7, find P(A)
Choose the correct alternative:
A man has 3 fifty rupee notes, 4 hundred rupees notes and 6 five hundred rupees notes in his pocket. If 2 notes are taken at random, what are the odds in favour of both notes being of hundred rupee denomination?
Choose the correct alternative:
A matrix is chosen at random from a set of all matrices of order 2, with elements 0 or 1 only. The probability that the determinant of the matrix chosen is non zero will be
Choose the correct alternative:
A bag contains 6 green, 2 white, and 7 black balls. If two balls are drawn simultaneously, then the probability that both are different colours is
Choose the correct alternative:
If m is a number such that m ≤ 5, then the probability that quadratic equation 2x2 + 2mx + m + 1 = 0 has real roots is
