If three students $A, B, C$ independently solve a problem with probabilitities $\frac{1}{3},\frac{1}{4}$ and $\frac{1}{5}$ respectively, then the probability that the problem will be solved is
$\frac {3}{5}$
$\frac {4}{5}$
$\frac {2}{5}$
$\frac {47}{60}$
If a coin be tossed $n$ times then probability that the head comes odd times is
The chance of throwing at least $9$ in a single throw with two dice, is
A die is thrown repeatedly until a six comes up. What is the sample space for this experiment ?
A die is thrown, find the probability of following events:A prime number will appear,
Two dice are thrown simultaneously. The probability of getting the sum $2$ or $8$ or $12$ is