Three unbiased coins are tossed simultaneously. Then,the probability of receiving at least two heads is ..........

$A$ card is drawn at random from a well-shuffled pack of $52$ cards. The probability of that card being an ace is ........

$A$ student says that if you throw a die,it will show up $1$ or not $1$. Therefore,the probability of getting $1$ and the probability of getting 'not $1$' each is equal to $\frac{1}{2}$. Is this correct? Give reasons.

Three unbiased coins are tossed simultaneously. Then,the probability of receiving at the most two tails is ........

$A$ triangular target with sides measuring $5 \, cm, 12 \, cm$,and $13 \, cm$ is drawn on a square board with side $20 \, cm$. Find the probability that a dart hitting the board hits the target.

There are boards numbered $1$ to $50$ in a box. One board is selected at random. Find the probability that the number on the board is a multiple of $11$. (in $/25$)