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Question

India, Nepal, Pakistan, Bhutan and Sri Lanka have completed in volleyball tournament. The winners get in order of merit I, II or III prize. What is the probability of India securing any one of the prizes?

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Solution

When India wins Ist prize, the remaining 2 prizes can be arranged in 4P2 ways.
Hence, number of permutations with India as a winner of IstPrize=4P2
Number of arrangements in which India can be the winner =3×4P2
But n(S)=5P3
Probability of India securing any one of the prizes =3×4P25P3=3×4×35×4×3=35

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