The chance of one tail (on a fair coin - i.e. it's not weighted or biased) is 0.5
Using the AND rule, which means the probability of two things BOTH happening means the two probabilities are multiplied. So the chance of a tail on coin 1 AND a tail on coin 2 is 0.5 x 0.5 = 0.25
The chance of 3 tails 0.5 x 0.5 x 0.5 = 0.125
The chance of 4 tails 0.5 x 0.5 x 0.5 x 0.5 = 0.0625
So your answer is 0.0625
cant happen at same time is mutually excusive eventsexamples:Turning left and turning right are Mutually Exclusive (you can't do both at the same time)Tossing a coin: Heads and Tails are Mutually ExclusiveCards: Kings and Aces are Mutually ExclusiveWhat is not Mutually Exclusive:Turning left and scratching your head can happen at the same timeKings and Hearts, because you can have a King of Hearts!
The technical name for the heads side of a coin in obverse, and the tails side is called reverse The technical name for the heads side of a coin in obverse, and the tails side is called reverse
That date makes it a Peace dollar. The obverse features a young Lady Liberty, wearing a pointed crown, similar to that found on the Statue of Liberty. The reverse shows a bald eagle perched on an olive branch.
August 10, 2009 The 1904 Morgan Dollar was produced at 3 US mints: Philadelphia which is shown as 1904-P in this list, New Orleans which is shown as 1904-O in this list and San Francisco which is shown as 1904-S in this list. To determine which coin you have it is necessary to locate the mint mark. This mark consists of a small letter located on the reverse [tails] side of the coin just above the letters "DO" in the word "DOLLAR". The letter "O" is for New Orleans. The letter "S" is for San Francisco. If there is no letter the coin was minted at Philadelphia. The circulated and uncirculated values for these coins are shown in the following list: Circulated Grades.........1904-P.....................1904-O................1904-S G4...................................$20...........................$18.....................$35 F12..................................$26...........................$21.....................$52 EF40................................$32...........................$24.....................$245 AU55................................$37...........................$27.....................$625 Uncirculated GradesMS62.................................$140.......................$38.......................$2,400 MS63.................................$265.......................$50.......................$3,800 MS65.................................$3,250.....................$160.....................$10,500
It is (1/2)3 = 1/8
The probability for that is (1/2)4 = 1/16.
Zero. Since coins land on Heads or Tails and not numbers.
Assuming it is a fair coin, the probability is 1/24 = 1/16.
The sample space for tossing 2 coins is (H = Heads & T = Tails): HH, HT, TH, TT
50% chance.
2 out of 8
three heads two head, one tails one heads, two tails three tails
It is 60/100 = 0.6
The probability of tossing a coin 5 times and getting all tails is:P(TTTTT) = (1/2)5 = 0.03125 ≈ 3.13%
The probability of getting only one tails is (1/2)7. With seven permutations of which flip is the tails, this gives a probability of: P(six heads in seven flips) = 7*(1/2)7 = 7/128
Since each event is independent, the probability remains at 0.5.