Questions
Seven girls G1, G2, G3, ..., G7 are such that their ages are in order G1 < G2 < G3 < ….. < G7. Five girls are selected at random and arranged in increasing order of their ages. The probability that G5 and G7 are not consecutive is
detailed solution
Correct option is C
Required probability = I - P (G5 and G7 are consecutive) =1− 4C3 7C5=1721Talk to our academic expert!
Similar Questions
A bag contains 10 different balls. Five balls are drawn simultaneously and then replaced and then seven balls are drawn. If the probability that exactly three balls are common to the two draws is p, then the value of 8p is ________.
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