Probability - Class 10 Maths - Extra Questions

There are three boys and two girls. A committee of two is to be formed. Find the probability of events that the committee contains one boy and one girl.



There are three boys and two girls. A committee of two is to be formed. Find the probability of event that the committee contains at least one girl



A die is thrown 20 times. Getting a number greater than 4 is considered a success. Find the mean and variance of the number of successes.



Write the sum of the probabilities of all the elementary events of an experiment.



One card is drawn from a well-shuffled deck of $$52$$ cards. Calculate the probability that the card will 
not be an ace



Define an elementary events.



On throwing a dice once once, the probability of occurrence of an even number is $$ 1 / 2 $$



If two dice are rolled 12 times, obtain the mean and the variance of the distribution of successes, if getting a total greater than 4 is considered a success.



What is an elementary event ?



$$10p + 10 = 100$$



Complete the following statements:
(i) Probability of an event E + Probability of the event not E $$=$$ ______.
(ii) The probability of an event that cannot happen is _____. Such an event is called _____.
(iii) The probability of an event that is certain to happen is _____. Such an event is called ______.
(iv) The sum of the probabilities of all the elementary events of an experiment is _____.
(v) The probability of an event is greater than or equal to _____ and less than or equal to ______.



Two dice are thrown at the same time and the product of number appearing on them ia noted. Find the probability that the product is a prime number 



A card is drawn at random from a well shuffled pack of $$52$$ playing cards. Find the probability that the drawn card is neither a king nor a queen.



$$\begin{array} { l } { \text { Given that the two numbers appearing on throwing two dice are different. Find } } \\ { \text { the probability of the event 'the sum of numbers on the dice is } 4 \text { '. } } \end{array}$$



If two die are rolled 12 times, obtain the mean and the variance of the distribution of successes, if getting a total greater than 4 is considered a success.



When two dice are rolled :
Find probability of getting an odd total.



A die is thrown thrice. Find the probability of getting an odd number number at least once.



In a simultaneous throw of a pair of dice, find the probability of getting:
$$8$$ as the sum



A letter of English alphabet is chosen at random. What is the probability that the chosen letter is a consonant. 



A bag contain $$4$$ red, $$5$$ black and $$6$$ white balls. A ball is drawn from the bag at random. Find the probability that the ball drawn is:
not black 



List all events associated with the random experiment of tossing of two coins. How many of them are elementary events?



Three coins are tossed once. Describe the following events associated with this ransom experiment.
$$A=$$ Getting three heads, $$B=$$ Getting two heads and one tail,
$$C=$$ Getting three tails,  $$D=$$ Getting a head on the first coin.
Which events are elementary events 



Find the probability of getting 4 when a die is thrown once.



A bag contains $$5$$ white and $$9$$ red balls. One ball is drawn at random from the bag. Find the probability of getting (a) a white ball, (b) a red ball.



Class 10 Maths Extra Questions