Coins do not have numbers, there is only the probability of heads or tails.
1/2
The conditional probability is 1/4.
The probability that exactly one will land heads up is 0.15625
It is 3/4 or 0.75
The probability of tossing two heads in two coins is 0.25.
The probability is 1/21/21/2*1/2=1/16, or 0.0625 or 6.25%
the probability is 0.03125 or 3.123%
It is 0.3125
P(Heads) = 2/3
0.1222...
Coins do not have numbers, there is only the probability of heads or tails.
1/2
The conditional probability is 1/4.
The probability is 1/2^4 = 1/16
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
The probability that exactly one will land heads up is 0.15625