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four numbers are chosen at random from (1,2,3,....40).the probability that they are not consequtive is?

Vijay kumar patibanda , 12 Years ago
Grade 12th Pass
anser 3 Answers
Akash Kumar Dutta

total outcome=40 C 4
37 pairs of consecutive number....chosing them in 37C1
hecne P= 37 C 1 /  40 C 4

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Last Activity: 12 Years ago
Chetan Mandayam Nayakar

1-(37/40C4)

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Last Activity: 12 Years ago
Akash Kumar Dutta

the ans is (1-P)
where P has been written on the topmost comment of mine.

Last Activity: 12 Years ago
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