The probability that a person chosen at random is left-handed (in handwriting) is $0.1$. Then the probability that in a group of $10$ people there is exactly one left-handed person is:

Two cards are drawn successively with replacement from a well-shuffled pack of $52$ cards. The mean of the number of kings is:

If $8$ coins are tossed simultaneously,then the probability of getting at least $6$ heads is

$A$ man tosses a coin $10$ times,scoring $1$ point for each head and $2$ points for each tail. Let $P(K)$ be the probability of scoring at least $K$ points. The largest value of $K$ such that $P(K) > \frac{1}{2}$ is

If a dice is thrown $7$ times,then the probability of obtaining $5$ exactly $4$ times is

$A$ and $B$ are playing a chess game with each other. The probability that $A$ wins the game is $0.6$,the probability that he loses is $0.3$,and the probability that it is a draw is $0.1$. If they play three games,what is the probability that $A$ wins at least two games?