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Earn +20 ptsQ: What is the probability that exactly 2 coins will show heads?
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What is the probability if 8 coins are flipped exactly 2 coins will show heads?
2/8 or 1/4 or 25 %
What is the probability of flipping 2 coins and having both show heads?
If both tosses are fair, the probability of that outcome is one in four.
What is the probability of tossing three coins and having them exactly one of them show tails?
It is 0.375It is 0.375It is 0.375It is 0.375
When tossing 5 coins simultaneously find the probability that at least 1 head is showing.?
This is easiest to solve by working out the probability that no heads show and subtracting this from 1 to give the probability that at least one head shows: Assuming unbiased coins which won't land and stay on their edge, the probability of head = probability of tail = ½ → probability no heads = probability 5 tails = ½^5 = 1/32 → probability of at least one head = 1 - 1/32 = 31/32 = 0.96875 = 96.875 % = 96 7/8 %
What is the probability that flipping two coin will show two tails?
1 in two but they say the side with heads is slightly Heavier.
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