Describe the sample space for the indicated experiment : A die is thrown two times.
When a die is thrown, the possible outcomes are $1,\,2,\,3,\,4,\,5,$ or $6$.
When a die is thrown two times, the sample is given by $S =\{(x, y): x , y =1,2,3,4,5,6\}$
The number of elements in this sample space is $6 \times 6=36,$ while the sample space is given by :
$S=\{(1,1),\,(1,2),\,(1,3)$, $( 1,4),\,(1,6),\,(2,1)$, $(2,2),\,(2,3),\,(2,4)$, $(2,5),\,(2,6),\,(3,1),$ $(3,2),\,(3,3),\,(3,4)$, $(3,5),$ $(3,6),\,(4,1)\,,(4,2)$, $(4,3),\,(4,4),\,(4,5),\,(4,6)$, $(5,1)\,,(5,2),$ $(5,3)\,,(5,4)\,,(5,5)$, $(5,6),\,(6,1),\,(6,2)$, $(6,3)$, $(6,4),\,(6,5),\,(6,6)\}$
A coin is tossed $3$ times by $2$ persons. What is the probability that both get equal number of heads
The probability of getting head and tail alternately in three throws of a coin (or a throw of three coins), is
Two dice are thrown. The events $A,\, B$ and $C$ are as follows:
$A:$ getting an even number on the first die.
$B:$ getting an odd number on the first die.
$C:$ getting the sum of the numbers on the dice $\leq 5$
State true or false $:$ (give reason for your answer)
Statement : $A$ and $B$ are mutually exclusive
Three coins are tossed. Describe Three events which are mutually exclusive and exhaustive.
If in a lottary there are $5$ prizes and $20$ blanks, then the probability of getting a prize is