The probability that a teacher will give an unannounced test during any class meeting is $1/5$. If a student is absent twice, then the probability that the student will miss at least one test is
$\frac{4}{5}$
$\frac{2}{5}$
$\frac{7}{5}$
$\frac{9}{{25}}$
A card is selected from a pack of $52$ cards. Calculate the probability that the card is black card.
Three coins are tossed once. Find the probability of getting at most $2$ heads.
A six faced dice is so biased that it is twice as likely to show an even number as an odd number when thrown. It is thrown twice. The probability that the sum of two numbers thrown is even, is
A coin is tossed twice. The probability of getting head both the times is
In a throw of a die, what is the probability of getting a number less than $7$