The probability of a sure event is
$0$
$1$
$2$
$\frac{1}{2}$
(b) It is obvious.
The probability that an event will fail to happen is $0.05$. The probability that the event will take place on $4$ consecutive occasions is
A box contains $10$ good articles and $6$ with defects. One article is chosen at random. What is the probability that it is either good or has a defect
A fair coin with $1$ marked on one face and $6$ on the other and a fair die are both tossed. find the probability that the sum of numbers that turn up is $3$.
A card is drawn from a well shuffled pack of cards. The probability of getting a queen of club or king of heart is
For independent events ${A_1},\,{A_2},\,……….,{A_n},$ $P({A_i}) = \frac{1}{{i + 1}},$ $i = 1,\,\,2,\,……,\,\,n.$ Then the probability that none of the event will occur, is
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