GATE | GATE-CS-2001 | Question 29

Seven (distinct) car accidents occurred in a week. What is the probability that they all occurred on the same day?
(A) 1/77
(B) 1/76
(C) 1/27
(D) 7/27


Answer: (B)

Explanation: Prob(all accidents on Monday) = 1/77. Similarly for other 6 days. So total probability = 7 * 1/77 = 1/76. So option (B) is correct.

Source: http://www.cse.iitd.ac.in/~mittal/gate/gate_math_2001.html

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