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In a school X,48 students appeared for 1...

In a school X,48 students appeared for 10th class exam out of which 36 students passed. In another school Y, 30 students appeared and 24 students passed. If the District Educational Officer wants to give an award on the basis of pass percentage. To which school will he give the award?

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The correct Answer is:
School Y
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Knowledge Check

  • I:In a class 25% of the students failed in Mathematics , 30% failed in Chemistry and 15% failed in both Mathematics and Chemistry . If a student is selected at random failed in Mathematics , the probability that he failed in Chemistry is 1//2 . II: A bag contains 10 identical balls of which 4 are blue and 6 are red. 3 balls are taken out at random from the bag one after the other. The probability that all the 3 balls drawn are red is 1//6 .

    A
    Only I is true
    B
    Only II is true
    C
    Both I and II are true
    D
    neither I nor II true

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