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Because you are thinking permutations rather than combinations. There are four permutations of two coins, but there are only three combinations, because it does not matter which coin is heads and which coin is tails. As a result, the combination of heads and tails has a 0.5 probability, while two heads or two tails each have a 0.25 probability.

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If you flip 4 fair coins which of these is the most likely to outcome?

2 heads and 2 tails


If You flip 9 fair coins Amazingly the first 8 flips all come up heads What is the probability that the final flip will be a head too?

1/2 apex It does not matter what each prior flip's result was. Each flip has a probability of 0.5 heads or tails. Coins do not have "memory".


If you Flip four coins at once what is probability of 2 head and 3 tail?

http://wiki.answers.com/Q/If_you_Flip_four_coins_at_once_what_is_probability_of_2_head_and_3_tail" The probability of flipping four coins and getting 2 heads and 3 tails is ZERO 2 heads and 3 tails requires flipping FIVE coins.


If you flip 5 coins how many possible outcomes are there?

If each coin is a different color, then there are 32 possible outcomes. If you can't tell the difference between the coins, and you're just counting the number of heads and tails, then there are 6 possible outcomes: 5 heads 4 heads 3 heads 2 heads 1 heads all tails


What is the probability that a coin lands on its heads and tails?

The probability of the coin flip being heads or tails is 100%.


What is experemental probobility?

Expirimental probability is when you use an expiriment to find the probability of a certain predicament. For example: Let's say you flip a coin 10 times. Before you flip you guess that you flip 5 heads and 5 tails or 1/2 heads and 1/2 tails. You guess this because one side is heads and the other side is tails so its an even risk. This is theoretical probability. When you actually do flip the coins you get, lets say, 8 heads and 2 tails. This would make your expirimental probability 4/5 heads and 1/5 tails. That is because you based the evidence on an expiriment rather than a guess. The longer the expiriment is, the more accurate your evidence will be.


What is the probability that you flip a head after you flipped 100 coins and 87 were heads and 13 were tails?

50% Every time you flip a coin, there is a 50% chance it will come up heads and a 50% chance it will come up tails, no matter how many times you have already flipped it, and no matter what the results were of previous flips.


If you flip a coin how many outcomes are there?

2. There is heads and there is tails.


What is the probability that the results are all heads or tails when you flip a coin 5 times?

50%. there are only 2 choices heads or tails and that doesn't change no matter how many times you flip the coin


How many different outcomes if you roll a die and flip a penny?

If you roll a standard die and flip a penny at the same time, there are 12 possible outcomes. You can find this out quickly by multiplying the number of outcomes of the coin (2) by the number of outcomes of the die (6). Here they are: Heads, 1 Heads, 2 Heads, 3 Heads, 4 Heads, 5 Heads, 6 Tails, 1 Tails, 2 Tails, 3 Tails, 4 Tails, 5 Tails, 6


Is a quarter most likely to be on heads or tails after a flip?

50/50


What is the outcome if you flip a coin 1 time?

It is either heads or tails.

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