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A bag contains 150 nuts and 50 bolts. Ha...

A bag contains 150 nuts and 50 bolts. Half of the bolts and half of the nuts are rusted. One item is drawn at random from the bag. The probability that it is either rusted or a bolt is

A

`3/8`

B

`5/8`

C

`1/4`

D

`1/2`

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The correct Answer is:
B
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ICSE-PROBABILITY -MULTIPLE CHOICE QUESTION
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  2. A and B throw two dice each. If A gets a sum of 9 on his two dice, the...

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  3. In a single throw of three dice, the probability of getting the same n...

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  4. Two cards are drawn at random from a well shuffled pack of 52 cards. T...

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  5. Six boys and six girls sit in a row randomly. The probability that the...

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  6. Five boys and four girls sit in a row randomly. The probability that n...

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  7. If A and B are any two events P (A cup B) = 2/3 and P (barB) =1/2 , t...

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  8. If the probability of A to fail in an examination is 1/5 and that of B...

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  9. If A and B are mutually exclusive and exhaustive events and P(A) = 1/3...

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  10. If A, B, C are three mutually exclusive and exhaustive events of an ex...

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  11. In a large metropolitan area, the probabilities are 0.87, 0.36, 0.30 t...

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  12. The probability of an event A occurring is 0.5 and of B is 0.3. If A a...

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  13. The probability that atleast one of the events A and B occurs is 0.6. ...

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  14. A bag contains 150 nuts and 50 bolts. Half of the bolts and half of th...

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  15. A and B are two mutually exclusive events of an experiment: If P(not A...

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  16. Three numbers are chosen at random from the first 20 natural numbers. ...

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  17. Three numbers are chosen at random from the first 20 natural numbers. ...

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  18. Four digit numbers are formed using the digits 0, 2, 3,5 without repet...

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  19. If A and B are mutually exclusive events, then

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  20. The probability that a student will pass his examination is 0.73, the ...

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