The probability that an ordinary or a non-leap year has $53$ sunday, is
$\frac{2}{7}$
$\frac{1}{7}$
$\frac{3}{7}$
None of these
An experiment consists of recording boy-girl composition of families with $2$ children. What is the sample space if we are interested in the number of girls in the family?
A box contains $1$ red and $3$ identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.
Describe the sample space for the indicated experiment: A coin is tossed four times.
Describe the sample space for the indicated experiment: A coin is tossed and then a die is rolled only in case a head is shown on the coin.
An experiment consists of tossing a coin and then throwing it second time if a head occurs. If a tail occurs on the first toss, then a die is rolled once. Find the sample space.