The answer depends on how many numbers are on the circle and if they are all represented by the same areas.
7/8
1/2 * 1/2 = 1/4 1/2= probability of landing an even number 1/2 = probability of landing a heads
It is 4/8 = 1/2
1/2
The probability of the first coin landing heads is half (or 1/2). Similarly, the probability of the second and third coins landing heads are also 1/2 in each case. Therefore, the probability of having three heads is: (1/2)(1/2)(1/2) = (1/8)
1/8. The probability of flipping a coin three times and it landing on head is 1/2, as a coin only has two sides. You flip a coin three times, therefore the answer is (1/2)^3 = 1/8.
The probability is 0.625
1/2 * 1/2 * 1/2 or 1/8
4C2(1/2)4 = 6/16 = 3/8
1/8 or .125 or 12.5%
Simple question, difficult answer. It depends on how many times you want the penny to land on heads. The probability of a penny landing on heads once is 1 in 2. For it to land on heads twice is 1 in 4, for three times it is 1 in 8, and so on and so forth.
The sample space is 23 or 8; which can be listed out as: HHH, HHT, HTH, HTT, THH, THT, TTH, TTT. There are 2 of the 8 that have exactly 2 heads; so the probability of exactly two coins landing on heads is 2/8 or 1/4.