A committee of five persons is to be chosen from a group of 10 people The probability that a certain...........

Quantitative Aptitude ( CCS) Probability

A committee of five persons is to be chosen from a group of 10 people. The probability that a certain married couple will either serve together or not at all is?

54/199

52/195

53/186

51/126

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Explanation:

Answer & Explanation
Answer – 51/126
Explanation :
Five persons is to be chosen from a group of 10 people = ¹⁰C₅ = 252
Couple Serve together = ⁸C₃ * ²C₂ = 56
Couple does not serve =⁸C₅ = 56
Probability = 102/252 = 51/126