2/9
The probabilty of you flipping 3 coins and getting all heads or tails is 0.125 or 1/8.
1 chance in 4
It is the event that one of the two coins lands showing tails and the other shows heads.
Heads ( H ) Tails ( T ) HH , TT , HT , TH
2/9
The probabilty of you flipping 3 coins and getting all heads or tails is 0.125 or 1/8.
The probability of tossing two heads in two coins is 0.25.
10/32 = 5/16
If they are fair coins, it is 1/16.
There are 4 events: 3 heads, 2 heads 1 tail, 1 head 2 tails, and 3 tails.
(0.5)n
3
6/16 = 3/8
1 chance in 4
Coins do not have numbers, there is only the probability of heads or tails.
The probability that both coins are heads is the probability of one coin landing heads multiplied by the probability of the second coin landing heads: (.5) * (.5) = .25 or (1/2) * (1/2) = 1/4