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An instructor has a test bank consisting...

An instructor has a test bank consisting of 300 easy True/False questions, 200 difficult True/False questions, 500 easy multiple choice questions (MCQ) and 400 difficult multiple choice questions. If a questions is selected at random from the test bank, what is the probability that it will be an easy question given that it is a multiple choice question.

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RD SHARMA ENGLISH-PROBABILITY-All Questions
  1. Consider the experiment of throwing a die. if a multiple of 3 comes ...

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

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  3. An instructor has a test bank consisting of 300 easy True/False que...

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  4. Given that A\ a n d\ B are two events such that P :(A)=0. 6 ,\ P(B)=0....

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

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  6. Ten cards numbered1 through 10 are placed in a box, mixed up thoroughl...

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  7. Assume that each child born is equally likely to be a boy or a girl. I...

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  8. Given that the two number appearing on throwing two dice are different...

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  9. A die is thrown three times, find the probability that 4 appears on th...

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  10. Compute P(A//B),\ if\ P(B)=0. 5\ a n d\ P(AnnB)=0. 32 .

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  11. If P(A)=0. 4 ,\ P(B)=0. 3\ a n d\ P(B//A)=0. 5 , find P(AnnB)\ a n d\ ...

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  12. If A and B are two events such that P(A)=1/3,\ find\ P(B) =1/5 a n d\ ...

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  13. A couple has two children. Find the probability that both the children...

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  14. From a pack of 52 cards, two are drawn one by one without replacement....

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  15. From a pack of 52 cards, 4 are drawn one by one without replacement. ...

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  16. Find the chance of drawing 2 white balls in succession from a bag cont...

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  17. A bag contains 25 tickets, numbered from 1 to 25. A ticket is drawn an...

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

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  19. From a pack of 52 cards, two cards are drawn at random one after the o...

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

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