In each of the following experiments specify appropriate sample space A boy has a $1$ rupee coin, a $2$ rupee coin and a $5$ rupee coin in his pocket. He takes out two coins out of his pocket, one after the other.
Let $Q$ denote a $1$ rupee coin, $H$ denotes a $2$ rupee coin and $R$ denotes a $5$ rupee coin. The first coin he takes out of his pocket may be any one of the three coins $Q$, $H$ or $R$. Corresponding to $Q$. the second draw may be $H$ or $R$. So the result of two draws may be $QH$ or $QR$. Similarly, corresponding to $H$, the second draw may be $Q$ or $R$.
Therefore, the outcomes may be $HQ$ or $HR$. Lastly, corresponding to $R$, the second draw may be $H$ or $Q$.
So, the outcomes may be $RH$ or $RQ$.
Thus, the sample space is $S =\{ QH ,\, QR ,\, HQ , \,HR , \,RH ,\, RQ \}$
Probability of throwing $16$ in one throw with three dice is
A number is chosen at random from the set $\{1,2,3, \ldots, 2000\}$. Let $p$ be the probability that the chosen number is a multiple of $3$ or a multiple of $7$ . Then the value of $500\ p$ is. . . . . .
A die has two faces each with number $^{\prime}1^{\prime}$ , three faces each with number $^{\prime}2^{\prime}$ and one face with number $^{\prime}3^{\prime}$. If die is rolled once, determine $P(1$ or $3)$
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A card is drawn from a pack of $52$ cards. If $A =$ card is of diamond, $B =$ card is an ace and $A \cap B = $ card is ace of diamond, then events $A$ and $B$ are