Mathematics
Gabe1
2016-09-25 21:14:36
If you flip three fair coins, what is the probability that the first two flips will both be heads, and the third flip will be either heads or tails?
ANSWERS
Zipay384
2016-09-25 23:31:28

25%. With a 50% chance of it landing heads the first time, you need to multiply it by the percentage that you have that it will land on heads again, which is 50. 50% of 50 is 25, and then having it land on either heads or tails for the third time is guaranteed, so multiply that probability (100%) by the previous 25% which ends up being simply 25%

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