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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.
If two dice are rolled what is the probability of getting s sum less than 3?
The only number less than 3 that you can get with two dice is 2. The probability of getting a 2 is 1/36.The only number less than 3 that you can get with two dice is 2. The probability of getting a 2 is 1/36.The only number less than 3 that you can get with two dice is 2. The probability of getting a 2 is 1/36.The only number less than 3 that you can get with two dice is 2. The probability of getting a 2 is 1/36.
What is the probability of getting exactly 2 heads by flipping 3 coins?
The probability is 0.375
What is the probability of getting a 2 on a dice?
1/6 A dice has six faces. And '2' is on one if its faces. So the probability of getting a 2 on a dice is 1 over 6.
What is the probability of getting a factor of 4?
1 out of 2
