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There are 4 white and 4 black in a bag a...

There are 4 white and 4 black in a bag and 3 balls are drawn at random. If balls of same colour are identical, the probability that none of them is black, is

A

`1//4`

B

`1//14`

C

`1//2`

D

none of these

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The correct Answer is:
A
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OBJECTIVE RD SHARMA ENGLISH-PROBABILITY -Chapter Test
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  4. Cards are drawn one-by-one at random from a well-shuffled pack of 52 ...

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  5. Five different objects A1,A2,A3,A4,A5 are distributed randomly in 5 pl...

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  6. A father has 3 children with at least one boy. The probability that he...

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  7. Out of 13 applicants for a job, there are 5 women and 8 men. It is des...

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  8. A box contain 100 tickets numbered 1, 2,......, 100. Two tickets are c...

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  9. A wire of length l is cut into three pieces. Find the probability that...

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  10. If x in [0,5], then what is the probability that x^2 - 3x + 2 > 0

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  11. If ain[-20, 0], find the probability that the graph of the function y=...

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  12. The probability that A can solve a problem is 2//3 and B can solve it ...

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

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  14. Five boys and three girls are seated at random in a row. The probabili...

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  15. A and B are two independent events such that P(A)=(1)/(5), P(A cup B)=...

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  16. A and B are two independent events such that their probabilities are (...

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  17. There are 7 seats in a row. Three persons take seats at random the pro...

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  18. 10 different books and 2 different pens are given to 3 boys so that ea...

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  19. 4 five-rupee coins, 3 two-rupee coins and 2 one-rupee coins are stacke...

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  20. Two cards are drawn at random from a pack of 52 cards. The probability...

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