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If three fair coins are tossed in how many ways can at least one head be obtained?
Wiki User
∙ 6y ago
Ignoring the very small possibility that a coin tossed will land on its edge and stay there, I'll assume each coin can land either Head or Tails.
The reverse of the condition "at least one Head" is "no Heads"
Thus the number of ways of at least one Head is the same as the total number of ways less the number of way of no Heads.
There are 2 × 2 × 2 = 2³ = 8 possible ways the three coins can land.
Of these there is only 1 way which shows no Heads: TTT
Thus there are 8 - 1 = 7 ways that at least one Head shows
You could list all the possible ways that at least one head shows (which are: HTT, THT, TTH, HHT, HTH, THH, HHH - 7 of them), but the "subtractive" method above is much quicker and easier and less prone to error in the listing.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoThere are 7 ways.
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How many possible outcomes would be if three coins were tossed once?
There are eight (8).
How many possible outcomes would there be if three coins were tossed up three times?
9, you just have to multiply for problems like this
How many simple events are in the sample space when three coins are tossed?
There are 4 events: 3 heads, 2 heads 1 tail, 1 head 2 tails, and 3 tails.
Suppose three coins are tossed what is the probability of tossing more than one tail?
n(S)=8 let A be the event that more than one tail appears n(A)=4 so,P(A)=4\8=0.5
What 3 coins make 1.50?
Three half-dollars (three 50-cent coins). In US coins, a dollar and two quarters (dollar coins are not well-circulated).
How many possible outcomes would be if three coins were tossed once?
There are eight (8).
How many possible outcomes would there be if three coins were each tossed onces?
Eight of them.
What are the patterns if three coins are tossed?
They are:HHH, HHT, HTH, THH, HTT, THT, TTH, TTT.
How many possible outcomes would there be if three coins were tossed up three times?
9, you just have to multiply for problems like this
Three fair coins are tossed at the same time What is the probability that one of the coins will show heads and the other two will show tails?
2/9
What is the probability of tossing at least three heads if a fair coin is tossed four times?
It is 0.3125
Three coins are tossed the result is at most one head List the elements of the given event?
TTT, TTH, THT, HTT
Three fair coins are tossed- whats the probability of tossing at least one head?
The chance for each toss is 1/2. The chance of all three flips being tails is 1/2 * 1/2 * 1/2 = 1/8. So the probability of at least one head is 7/8.
Three coins tossed at once what the probabilty of no heads?
1/2 x 1/2 x 1/2 = 1/8 or 0.125 also 12.5%
Three coins are tossed simultaneously the probability of getting atmost one head?
1/2 or 50% (1/8 prob of 0H + 3/8 prob of 1H)
What is the probability that you get three tails given that you get at least two tails if ou flip three coins?
1/4
How many simple events are in the sample space when three coins are tossed?
There are 4 events: 3 heads, 2 heads 1 tail, 1 head 2 tails, and 3 tails.
