If a coin is flipped 75 times, in how many ways could there be exactly two tails?

Question

Punkin

Mathematics

25 June, 00:06

If a coin is flipped 75 times, in how many ways could there be exactly two tails?

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Answers (2)

Know the Answer?

Marlene · Answer 1

I think the answer is 2774, it's just a case of adding up all the numbers from 2 to 74. It's like flip 1 and 2, could be the only 2 tails, then 1 and 3, 1 and 4 etc up to 1 and 75, then 2 and 3, 3 and 4 etc ... U get what I mean, anyway I think it's 2774

Ernest Mckay · Answer 2

I think the answer is 2774 but dont quote me on it