The probability of happening of an impossible event i.e. $P\,(\phi )$ is
$1$
$0$
$2$
$-1$
The probability of obtaining an even prime number on each die, when a pair of dice is rolled is
An integer is chosen at random and squared. The probability that the last digit of the square is $1$ or $5$ is
Two dice are thrown simultaneously. What is the probability of obtaining a multiple of $2$ on one of them and a multiple of $3$ on the other
The chance of getting a doublet with $2$ dice is
In a throw of a die, what is the probability of getting a number less than $7$