I think after a few I'll understand, but can you explain these please?
1. The quarter shows heads.
2. The penny and the nickel show heads.
3. One coin shows heads.
4. All three coins land the same way.
Please help me, if you can you'll get Best Answer :} Thanks.
1. The quarter shows heads.
2. The penny and the nickel show heads.
3. One coin shows heads.
4. All three coins land the same way.
Please help me, if you can you'll get Best Answer :} Thanks.
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1. With a quarter, there are 2 sides, meaning there are 2 possibilities. YOu can either get a Heads or a Tails. So...
P{Heads} = 1/2 or 50%
2. When you're figuring out the probability of more than one thing, you have to multiply both of outcomes together.
P{Penny heads} = 1/2
P{Nickel heads} = 1/2
1/2 * 1/2 = 1/4 or 25% <--- This is your answer!
3. Do this one like you did #1
P{Heads} = 1/2 or 50% <--- This is your answer!
4. With this one, you do the same thing you did for #2, but instead of multiplying the outcomes of 2, you multiply the outcomes of 3. .
P{Head or Tails} = 1/2
P{Head or Tails} = 1/2
P{Head or Tails} = 1/2
1/2 * 1/2 * 1/2 = 1/8 or 12.5% <--- This is your answer!
P{Heads} = 1/2 or 50%
2. When you're figuring out the probability of more than one thing, you have to multiply both of outcomes together.
P{Penny heads} = 1/2
P{Nickel heads} = 1/2
1/2 * 1/2 = 1/4 or 25% <--- This is your answer!
3. Do this one like you did #1
P{Heads} = 1/2 or 50% <--- This is your answer!
4. With this one, you do the same thing you did for #2, but instead of multiplying the outcomes of 2, you multiply the outcomes of 3. .
P{Head or Tails} = 1/2
P{Head or Tails} = 1/2
P{Head or Tails} = 1/2
1/2 * 1/2 * 1/2 = 1/8 or 12.5% <--- This is your answer!
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I'm going to assume that the question involves tossing 3 coins; 1 quarter, 1 penny, 1 nickel since it is not explicitly stated.
1) There are 2 ways the quarter can land since we ignore the possibility of it landing on its side. It can be either heads or tales so the probability is 1/2 since there is one way to have heads out of two ways to land.
2) When you need two things to both occur you multiply their probabilities so this is (1/2)*(1/2) = 1/4
3) If this means only one shows heads you approach it as follows: How many ways can that happen? The answer is of course 3. Then you ask how many ways are there for three coins to land? The answer is 8 so the probability of a single head is 3/8. If you mean the probability of at least one head then you get 7/8 as there is only one way to have no heads.
4) There are 2 ways this can happen out of 8 so the answer is 1/4
1) There are 2 ways the quarter can land since we ignore the possibility of it landing on its side. It can be either heads or tales so the probability is 1/2 since there is one way to have heads out of two ways to land.
2) When you need two things to both occur you multiply their probabilities so this is (1/2)*(1/2) = 1/4
3) If this means only one shows heads you approach it as follows: How many ways can that happen? The answer is of course 3. Then you ask how many ways are there for three coins to land? The answer is 8 so the probability of a single head is 3/8. If you mean the probability of at least one head then you get 7/8 as there is only one way to have no heads.
4) There are 2 ways this can happen out of 8 so the answer is 1/4
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1. The quarter shows heads.
Ans: a coin has only two faces, a head and a tail, so the probability of getting a head is 1/2 or 50% the same as with getting a tail.
2. The penny and the nickel show heads.
Ans: the probability of getting a head on a penny is 1/2 as well as with the nickel. Their terms are different but they were still a coin. So to get the probability, multiply 1/2 by 1/2 which gives you 1/4.
3. One coin shows heads.
Ans: a coin has only two faces, a head and a tail, so the probability of getting a head is 1/2 or 50% the same as with getting a tail.
4. All three coins land the same way.
Ans: (1/2)(1/2)(1/2) = 1/8
Ans: a coin has only two faces, a head and a tail, so the probability of getting a head is 1/2 or 50% the same as with getting a tail.
2. The penny and the nickel show heads.
Ans: the probability of getting a head on a penny is 1/2 as well as with the nickel. Their terms are different but they were still a coin. So to get the probability, multiply 1/2 by 1/2 which gives you 1/4.
3. One coin shows heads.
Ans: a coin has only two faces, a head and a tail, so the probability of getting a head is 1/2 or 50% the same as with getting a tail.
4. All three coins land the same way.
Ans: (1/2)(1/2)(1/2) = 1/8