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In a college, 30% students fail in Physi...

In a college, 30% students fail in Physics, 25% fail in Mathematics and 10% fail in both. One student is chosen at random. Find the probability that she fails in Physics, if she failed in Mathematics.

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ARIHANT PUBLICATION-PROBABILITY-CHAPTER PRACTICE (SHORT ANSWER TYPE QUESTIONS)
  1. Two coins are tossed once. Find P(E//F). Where E= tail appears on o...

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  2. Two coins are tossed once. Find P(E//F). Where E:no tail appears an...

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  3. In a college, 30% students fail in Physics, 25% fail in Mathematics an...

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  4. Two dice are thrown. If it is known that the sum of numbers on the dic...

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  5. Two events E and F are indendent if P(E )=0.3 and P(E cup F) =0.5 t...

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  6. Given that the events A and B are such that P(A)=1/2,P(A cup B)=3/5 ...

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  7. Given that the events A and B are such that P(A)=1/2,P(A cup B)=3/5 ...

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  8. Let A and B be the independent events with P(A)=0.3 and P(B)=0.4 find...

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  9. Let A and B be the independent events with P(A)=0.3 and P(B)=0.4 find...

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  10. Let A and B be the independent events with P(A)=0.3 and P(B)=0.4 find...

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  11. Let A and B be the independent events with P(A)=0.3 and P(B)=0.4 find...

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  12. A box contains 3 orange balls, 3 green balls and 2 blue balls. Three b...

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  13. In a group of students, there are 3 boys and 3 girls, 4 students are t...

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  14. P speaks truth in 70% of the cases and Q in 80% of the cases. In what ...

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  15. A bag contains 5 red, 7 green and 4 white balls. 3 balls are drawn one...

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  16. A bag contains 5 red, 7 green and 4 white balls. 3 balls are drawn one...

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  17. A and B appears for an interview for two posts. The probability of A's...

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  18. A and B appears for an interview for two posts. The probability of A's...

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  19. Two dice are tossed. Find whether the following two events A and B are...

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  20. A bag contains (2n+1) coins. It is known that n of these coins have a ...

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