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In a school there are 1000 students, out...

In a school there are 1000 students, out of which 430 are girls. It is known that out of 430, 10% of the girls study in class XII. What is the probability that a student chosen randomly studies in class XII given that the chosen student is a girl?

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To solve the problem step by step, we will follow the principles of probability. ### Step 1: Identify the given data - Total number of students = 1000 - Number of girls = 430 - Percentage of girls studying in class XII = 10% ### Step 2: Calculate the number of girls studying in class XII ...
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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. Assume that each born child is equally likely to be a boy or a girl...

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  2. A coin is tossed thrice and all the eight outcomes are assumed equally...

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  3. In a school there are 1000 students, out of which 430 are girls. It is...

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  4. Prove that in throwing a pair of dice, the occurrence of the number...

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  5. if A and B be two events such that P(A)=1/4, P(B)=1/3 and P(AuuB)=1...

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  6. A bag contains 4 white, 7 black and 5 red balls. Three balls are drawn...

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  7. A coin is tossed three times. Let the events A ,B and C be defined ...

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  8. A card is drawn from a well-shuffled deck of 52 cards and then a secon...

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  9. A box of oranges is inspected by examining three randomly selected ora...

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  10. A coin is tossed three times. Find P(A/B) in each of the following:...

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  11. Two coins are tossed once. Find P(A/B) in each of the following...

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  12. If P(A)=0. 4 ,P(B)=0. 8 ,P(B/A)=0. 6. Find P(A/B) and (AuuB)dot

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  13. If A and B are two events such that 2P(A)=P(B)=5/(13) and P(A/B)=2/...

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  14. If P(A)=6/(11),P(B)=5/(11) and P(AuuB)=7/(11), find P(AnnB), P...

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  15. If P(A)7/(13),P(B)=9/(13) and P(AnnB)=4/(13), find P(A/B)dot

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  16. If A and B are events such that P(A)=0. 6 ,P(B)=0. 3 and P(AnnB)=0....

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  17. If A and B are two events such that P(AnnB)=0. 32 and P(B)=0. 5 , f...

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  18. A bag contains 20 tickets, numbered from 1 to 20. Two tickets are draw...

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  19. Two cards are drawn without replacement from a pack of 52 cards. Fi...

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  20. From a deck of cards, three cards are drawn on by one without replacem...

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