HEREDITY
BASICS OF PROBABILITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1
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10
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3
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5
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Detailed explanation-1: -If you flip a fair coin 10 times, you can get 0 heads about 0.1% of the time, 1 head about 1% of the time, 2 heads about 4% of the time, 3 heads about 12% of the time, 4 heads about 21% of the time, and 5 heads about 25% of the time. Thus, the chances of getting 5 heads is about 1 in 4.
Detailed explanation-2: -E.g. for 11, the closest you can get is 5 heads, 6 tails or 6 heads, 5 tails. For 10 tosses, the probability of fewer heads than tails is 0.377, equal number of heads and tails 0.246, more heads than tails 0.377 for a total of 1.
Detailed explanation-3: -Probability of getting exactly 5 heads = 252/1, 024 = 24.6%.
Detailed explanation-4: -Junho: According to probability, there is a 1/1024 chance of getting 10 consecutive heads (in a run of 10 flips in a row).
Detailed explanation-5: -Hence the probability of getting 5 heads =321.