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Answered 2011-09-15 23:33:46

Around 125, assuming it isn't rigged!

-Andrew D.

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If you toss a fair coin 250 times , about how many times should it land on tails?


There are two answers to this question. If it can only land on heads or tails up, then there is a 50% chance ( or half a chance) it will land heads up, but that's not necessarily true. But, if it can land on heads, tails, or sides, then there is a 16% chance it will land tails up.


The odds that a tossed coin will land tails side down remain one in two no matter how many times the coin has previously been tossed.


30 times because it landed on heads 20 times, but he flipped the coin 50 times. 20+30=50.


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


That depends how many times you flip the coin.



A fair coin would be expected to land on heads 10 times on average.


1heads heads heads 2heads heads tails 3heads tails heads 4heads tails tails 5tails tails tails 6tails tails heads 7tails heads tails 8tails heads heads


The outcomes are: heads, tails, tails or tails, heads, tails or tails, tails, heads. You can see that there are 3 possible outcomes with exactly 1 head.




It could land on heads any number of times between zero and 150.The most probable result, if the coin is honest and balanced, is 75 times.



Out of the 16 possible outcomes for a coin tossed four times, 4 of them result in 3 Tails & 1 Head. They are: TTTH, TTHT, THTT, and HTTT.


The probability of a flipped coin landing heads or tails will always be 50% either way, no matter how many times you flip it.


2. There is heads and there is tails.


you cannot predict how many times you get heads or tails but however you can predict the probability it will hit heads or tails only which is don by multiplying 1/2 by itself 5 times


Assuming the coins are fair, two-sided coins, and landing on their sides is not an option, there are four possible outcomes if you consider coin a having a head and coin b having a tail being a different instance from coin a being a tail and coin be having a head. Here they are; Coin A | Coin B Heads | Tails Heads | Heads Tails....| Heads Tails....| Tails


The probability of getting two tails in the first two is 1/4. And it does not matter how many more times the coins are tossed after the first two tosses.


The expected value is the number of tosses times the probability of tails, so: E(number of tails) = 52 * 1/2 = 52/2 = 26


The answer depends on how many coins were tossed.


There are 10 possibilities. For every space on the spinner you land on, there are two other outcomes (heads and tails). Say the colors are Blue, Green, Yellow, Red, and Purple. Here would be the final outcomes. Blue - heads or tails Green - heads or tails Yellow - heads or tails Red - heads or tails Purple - heads or tails


Getting heads is just as likely as getting tails. So the expected number of each is even. There are no other possibilities so you should expect 5 of each. Naturally, if you actually flip a coin 10 times, it may come out 6/4, 4/6, 7/3 or even 10/0, but 5/5 is the most likely outcome.


About 15 times - half of 30. This will not necessarily be the exact value; just the long-term average if you do the experiment many, many times.About 15 times - half of 30. This will not necessarily be the exact value; just the long-term average if you do the experiment many, many times.About 15 times - half of 30. This will not necessarily be the exact value; just the long-term average if you do the experiment many, many times.About 15 times - half of 30. This will not necessarily be the exact value; just the long-term average if you do the experiment many, many times.



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