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Two integers are selected at random from integers 1 through 11. If the sum is even, find the probability that both the numbers are odd.

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RD SHARMA ENGLISH-PROBABILITY-All Questions
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  13. A bag contains 3 red and 4 black balls and another bag has 4 red and 2...

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  14. 10% of the bulbs produced in a factory are of red colour and 2% are re...

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  15. Three distinguishable balls are distributed in 3 cells. The probabilit...

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  16. An electronic assembly consists of two sub-systems say A and B. From ...

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  17. Three dice are thrown at the same time. Find the probability of gettin...

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