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An integer is chosen at random from the first ten positive integers. Find the probability that it is (i) an even number (ii) multiple of three.

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The correct Answer is:
`=(3)/(10)`.
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NCERT TAMIL-INTRODUCTION TO PROBABILITY THEORY -Exercise 12.5
  1. An integer is chosen at random from the first ten positive integers. F...

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  2. Four persons are selected at random from a group of 3 men, 2 women and...

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  3. A number is selected from the set {1,2,3,...,20}. The probability t...

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  4. A, B, and C try to hit a target simultaneously but independently. Thei...

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  5. If A and B are any two events, then the probability that exactly one o...

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  6. Let A and B be two events such that P(overline(AuuB))=(1)/(6), " " ...

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  7. Two items are chosen from a lot containing twelve items of which four ...

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  8. A man has 3 fifty rupee notes, 4 hundred rupees notes and 6 five hundr...

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  9. A letter is taken at random from the letters of the word ‘ASSISTANT’ a...

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  10. A matrix is chosen at random from a set of all matrices of order 2, wi...

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  11. A bag contains 5 white and 3 black balls. Five balls are drawn success...

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  12. If A and B are two events such that AsubBandP(B)ne0 ,then which of the...

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  13. A bag contains 6 green, 2 white, and 7 black balls. If two balls are d...

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  14. If X and Y be two events such that P(X//Y)=(1)/(2),P(Y//X)=(1)/(3)and...

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  15. An urn contains 5 red and 5 black balls. A ball is drawn at random, it...

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  16. A number x is chosen at random from the first 100 natural numbers. Let...

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  17. If two events A and B are independent such that P(A)=0.35andP(AuuB)=0...

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  18. If two events A and B are such that P(overline(A))=(3)/(10)andP(Acapov...

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  19. There are three events A, B and C of which one and only one can happen...

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  20. If a and b are chosen randomly from the set {1,2,3,4} with replacement...

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  21. It is given that the events A and B are such that P(A)=(1)/(4),P(A//B)...

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