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If you flip 10 pennies all at the same time what is the probability that exactly 3 will come up heads and 7 will come up tail?
Wiki User
∙ 14y ago
10C3(0.5)^10
Wiki User
∙ 14y ago
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If you flip 10 pennies all at the same time, what is the probability that exactly 3 will come up heads and 7 will come up tails?
It is 0.1172
What is the probability that exactly two coins come up heads when four coins are tossed?
6/16 = 3/8
What is the probability of getting 2 heads when you toss three coins?
If you mean 'at least' 2 heads, the probability is 50%. If you mean exactly 2, the probability is 3/8, or 37.5%. There are 3 independent coin tosses, each of which is equally likely to come up heads or tails. That's a total of 2 * 2 * 2 or 8 possible outcomes (HHH, HHT, HTH, etc.). Of these, 4 include 2 or 3 heads, which is half of 8. Only 3 include exactly 2 heads, so the probability of that is 3/8.
What is the probability that the next coin flip will come up heads?
If it is a fair coin then the probability is 0.5
What are the chances you are going to toss 2 pennies 20 times how many times do you expect the 2 pennies will come up 2 heads?
Each time you toss two pennies, there are four ways they can land: H H H T T H T T One of the four ways is (Heads - Heads), so the probability of 2 heads is 1/4 or 25% . If the pennies are 'fair' (not loaded), and you toss them a large number of times, you should expect 2 heads roughly 1/4 of the time. Out of 20 tosses, that's 5 times. But don't bet on it.
What is the probability that 3 heads come up on a throw of 3 dice?
The probability is very, very small, because there are no heads marked anywhere on the dice.
What is the chance that that 2 flipped coins both come up heads?
The probability that 2 flipped coins both come up heads is 0.52 or 0.25
What is the probablity that a single coin flip will come up heads?
The probability that a single coin flip will come up heads is 0.5.
If you flip two coins the probability that both will come up heads is?
one fourth
The probability that both of two tossed coins will come down heads is?
1 chance in 4
What is the probability that a single coin flip will come up heads on the first two flips?
The probability of heads on the first flip is 50%.The probability of heads on the second flip is 50%.The probability of both is (50% x 50%) = 25% .=========================================Another way to look at it:Two tosses can come up in four different ways:H HH TT HT TOnly one of these . . . H H . . . counts as success.1 out of 4 = 25% .
What is the probability that if you flip the coin twice you come up with heads once and tails once?
It is 1/2.
