# Class 10 Maths Probability (Assignment)

Complete the following statements with suitable word(s).

1. Probability of an event E + Probability of the event ‘not E’ = _______ .

2. The probability of an event that cannot happen is ________ . Such an event is called ___________ .

3. The probability of an event that is certain to happen is ________ . Such an event is called ___________ .

4. The sum of the probabilities of all the elementary events of an experiment is ___.

5. The probability of an event is greater than or equal to ______ and less than or equal to _______ .

6. If P(E) is 0.05 then $P(\overline{E})$ =

7. It is given that in a group of 3 students, the probability of 2 students not having the same birthday is 0.992. The probability that the 2 students have the same birthday is _______.

8. A letter is chosen at random from English alphabet. The probability that the letter chosen precedes ‘g’ is ______

9. A bag contains 4 red and 6 black balls. A ball is taken out of the bag at random. The probability of getting a black ball is ________.

10. Rahim tosses two different coins simultaneously. The probability of getting at least one tail is _______.

11. A number is chosen at random among the first 100 natural numbers. The probability that a prime number is chosen is _____.

12. From a well-shuffled pack of 52 cards, a card is drawn at random, the probability that it is a red spade is _______.

13. Can event have single outcome? (True or False)

14. When the events have the same theoretical probability of happening, then they are called _________ events.

15. The set of all the possible outcomes to occur in any trial is called __________.

16. Theorie Analytique des Probabilités, 1812, is considered to be the greatest contribution by a single person to the theory of probability. Who wrote this book? _______________.

1: 1

2: 0, impossible event

3: 1, sure or certain event

4: 1

5: 0, 1

6: 0.95

7: 0.008

8: $\frac{3}{13}$

9: $\frac{3}{5}$

10: 0.75

11: 0.25

12: 0

13: True

14: equally likely

15: sample space

16: Pierre Simon Laplace