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Subjects>Math>Math & Arithmetic

What is the probability of getting a head when spinning 2 coins?

Anonymous

∙ 14y ago

Updated: 12/8/2022

Just one head = 2/4 = 1/2

Wiki User

∙ 14y ago

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What is the probability of getting exactly 220 coins with head when you toss 400 coins?

It is 0.00540 approx.

What is the probability of getting a head or a tail when spinning 2 coins?

The "or" in the statement is addition; so even with one coin the probability of getting a head or a tail when spinning it is 1, and since the probability can never be greater than 1, the answer is 1. Correct. I suspect the questioner means something different. Probability of getting H & H = 1/2x1/2 = 1/4 Probability of getting H & T = 1/2 x 1/2 = 1/4 Probability of getting T & H = 1/2 x 1/2 = 1/4 Probability of getting T & T = 1/2 x 1/2 = 1/4 So probability of getting just 1 head = 1/4 +1/4 = 1/2 Probability of getting 2 heads = 1/4 So probability of getting 1 or 2 heads = 1/2 + 1/4 = 3/4 Probability of not getting a head = 1/4 Similarly for switching heads and tails.

Probability of getting one head and two tails on a toss of three fair coins?

50%

What is the probability 700 coins out of 20000 coins will be head if flipped in the air?

50/50

What is the probability of a head in tossing three coins?

7/8

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