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When tossed, a certain coin has equal probability of landing on either
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23 Jul 2022, 08:12
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When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?
Re: When tossed, a certain coin has equal probability of landing on either
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26 Jul 2022, 08:30
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GeminiHeat wrote:
When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?
A. 1/8 B. 1/4 C. 1/3 D. 3/8 E. 1/2
P(3 matching tosses) = P(ANY result on 1st toss AND 2nd toss matches 1st toss AND 3rd toss matches 2nd toss) = P(ANY result on 1st toss) x P(2nd toss matches 1st toss ) x P(3rd toss matches 2nd toss) = 1 x 1/2 x 1/2 = 1/4
When tossed, a certain coin has equal probability of landing on either
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22 Oct 2022, 23:33
We need to find On three consecutive flips of a coin, what is the probability that it will land on the same side each time?
Coin is tossed 3 times => Total number of cases = 23 = 8
Lets solve the problem using two methods
Method 1:
Out of the 8 cases there are only two cases in which all the outcomes are same. HHH and TTT.
=> Probability that all three produce the same result = 28 = 14
So, Answer will be B
Method 2:
Let's find out the number of cases. In the first toss we can get anything out of head or tail in 2 ways In second toss we need to get the same value (head or tail) as we got in the first toss => 1 way In third toss we need to get the same value (head or tail) as we got in the second toss => 1 way
=> Total number of ways = 2*1*1 = 2 ways
=> Probability that all three produce the same result = 28 = 14
So, Answer will be B Hope it helps!
Watch the following video to learn How to Solve Probability with Coin Toss Problems
gmatclubot
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