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The probability of getting a head when a...

The probability of getting a head when a coin is tossed once is…………..

A

0

B

`1/2`

C

`1/4`

D

1

Text Solution

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The correct Answer is:
B
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Find the probability of getting a head when a coin is tossed once. Also find the probability of getting a tail.

A box contains N coins, m of which are fair and the rest are biased. The probability of getting a head when a fair coin is tossed is 1/2, while it is 2/3 when a biased coin is tossed. A coin is drawn from the box at random and is tossed twice. The first time it shows head and the second time it shows tail. What is the probability that the coin drawn is fair ?

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VGS PUBLICATION-BRILLIANT-PROBABILITY-PART-B OBSERVATION BITS TO SOLVE VARIOUS BITS GIVEN IN THE PUBLIC EXAMINATION
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  2. Getting a prime or composite number is a …………….event.

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  3. The probability of getting a head when a coin is tossed once is…………..

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  4. Which one of the following can not be the probability of an event?

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  5. IF P ( E ) =0.26, then P (overline E)=………..

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  9. IF a die is rolled, then the probability of getting a prime number is…...

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  10. Which of the following cannot be the probability of an event? 15%

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  11. From a deck of cards, a card is drawn at random, then the probability ...

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  12. IF P ( E ) =1, then P (overlineE)=…………

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  13. When a die is rolled, the probability of getting an odd prime number i...

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  14. The probability that the sum of two numbers appearing on the top of th...

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  15. IF P ( E ) =0.05, then P (overlineE)=………

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  16. Which of the following be the probability of an event?

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  17. P ( E )=0.65 then P (overlineE)=…….

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  18. IF P ( E )=0.82 then P (overlineE)=………

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  19. Let E, overlineE, be the complimentary events, in a random experiment ...

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  20. Which one of the following cannot be the probability of an event?

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