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Fifteen coupons are numbered 1 to 15. Seven coupons are selected at random, one at a time with replacement. The probability that the largest number appearing on a selected coupon be 9 is?
Asked by laks78 | 13 May, 2019, 23:37: PM
answered-by-expert Expert Answer
Total number of ways = 157
According to the question we must select 7 coupons numbered from 1 to 9 such that 9 is selected at least once.
Total number of favourable ways = 97 - 87
Required probability = (97 - 87)/157
Answered by Renu Varma | 14 May, 2019, 10:16: AM
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JEE main - Maths
if in a distribution each x is replaced by corresponding value of f(x) then the probability of getting f(x) whenbthe probability of getting x is p
Asked by pankajofficial | 28 Jun, 2024, 17:24: PM
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JEE main - Maths
the probability that a teacher will give an unannounced test during any class meeting is 1/5.if a student is absent twice ,then the probability that the student will miss at least one test
Asked by pankajofficial | 20 Jun, 2024, 00:28: AM
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JEE main - Maths
the probability of attending a conference is 0.5, and the probability of attending a workshop is 0.3. if 40% of conference attendees also attend workshops, what is the probability that a student attends a workshop given that they attended a conference?
Asked by ms9876tr | 28 Apr, 2024, 12:05: PM
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JEE main - Maths
A single letter is selected from the word TRICKS.The probability that it is either T or R
Asked by smeerarajeev | 02 Apr, 2024, 21:46: PM
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JEE main - Maths
Three mangoes and three apples are in box. If two fruits are chosen at random, the probability that one is a mango and the other is an apple is (a) 2/3 (b) 3/5 (c) 1/3 (d) None of these
Asked by anushkarajwar | 24 Mar, 2024, 13:19: PM
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JEE main - Maths
If 8 coins are tossed what is the probability that no of heads are not less than no. of tails?
Asked by dipeshsharma969 | 10 Jun, 2022, 13:31: PM
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JEE main - Maths
If the numbers 1, 2, 3, 4, 5, 6 are arranged in a circle, then the probability that the sum of any two consecutive numbers must not be equal to 7 is?
Asked by abhijaybhat1 | 29 Apr, 2022, 21:16: PM
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JEE main - Maths
in what cases is binomial distribution used in probability?
Asked by prithviramesh7 | 16 Apr, 2022, 03:33: AM
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JEE main - Maths
Three students took a test. The professor comes and tells them that only one has passed the test. “Which is it?” they ask. “I can’t tell you that,” says the professor. “I can’t tell a student their own fate before the results are declared.” Student A takes the professor aside. “Look,” he says. “Of the three of us, only one has passed. That means that one of my fellow students is still sure to fail. Give me his name. That way you’re not telling me my own fate.” The guard thinks about this and tells him, “Student B has failed.” Student A rejoices that his own chances of passing have improved from 1/3 to 1/2. But how is this possible? The professor has given him no new information. Or has he? What do you think? Has the chances of student A risen from 1/3 to 1/2 and if so, why? Or does it still remain at 1/3 and if so, why? Can you specify what the initial chances were of each student passing/failing, and what their chances are after the professor has shared the results for student B? Note that student C doesn't know anything about this conversation - has her chances changed too?
Asked by anjaliborse004 | 15 Mar, 2022, 12:09: PM
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JEE main - Maths
There are five clubs in Lucknow. If 3 singers check into clubs in a day. What is the probability that each singer check into a different club?
Asked by srtaneja54321 | 06 Feb, 2022, 22:35: PM
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