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Toss a fair coin 10 times. If you know that at least 7 heads are tossed, what is the probability that your first toss is heads?
Updated: 10/27/2022
Knowing the results in advance, there is a 7/10 chance that the first toss is heads.
In this case "seven out of ten" is quite literal. The first toss is one of the 10, and 7 of them came up heads, so 7/10 is the chance that this particular one is one of the heads.
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Earn +20 ptsQ: Toss a fair coin 10 times. If you know that at least 7 heads are tossed, what is the probability that your first toss is heads?
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When a coin is tossed 10 times in a row what is the probability that heads comes up at least 7 times?
7/10
What is the probability that at least one coin will be tails?
The answer depends on how many coins were tossed.
A coin is tossed 10 times. What is the probability of getting at least one head?
Assuming that it is a fair coin, the probability is 0.9990
You toss 3 coins what is the probability that at least 1 tail is tossed?
1/6
When tossing 5 coins simultaneously what is the probability that at least 1 head is showing?
Probability of no heads = (0.5)^5 = 0.03125Probability of at least one head = 1 - probability of no heads = 1 - 0.03125 = 0.96875
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