A die is thrown repeatedly until a six comes up. What is the sample space for this experiment ?
In this experiment, six may come up on the first throw, the second throw, the third throw and so on till six obtained.
Hence, the sample space of this experiment is given by
$S =\{6,(1,6),\,(2,6),$ $(3,6),\,(4,6),$ $(5,6),\,(1,1,6),\,(1,2,6)$, ...... , $(1,5,6),\,(2,1,6),\,(2,2,6)$, ....... $(2,5,6)$, ........ , $(5,1,6),\,(5,2,6)$, .......... $\}$
In each of the following experiments specify appropriate sample space A person is noting down the number of accidents along a busy highway during a year.
The probability that a marksman will hit a target is given as $1/5$. Then his probability of at least one hit in $10$ shots, is
There are $4$ envelopes with addresses and $4$ concerning letters. The probability that letter does not go into concerning proper envelope, is
Two dice are thrown and the sum of the numbers which come up on the dice is noted. Let us consider the following events associated with this experiment
$A:$ $^{\prime}$ the sum is even $^{\prime}$.
$B:$ $^{\prime}$the sum is a multiple of $3$$^{\prime}$
$C:$ $^{\prime}$the sum is less than $4 $$^{\prime}$
$D:$ $^{\prime}$the sum is greater than $11$$^{\prime}$.
Which pairs of these events are mutually exclusive ?
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 $3)$