15

Q1. Sum of the probability of happening and not happening of an event is:

1

2

0

None of these

Q2. The maximum probability of an event of a trial is:

0

-1

1

Lies between 0 and 1.

Q3. If the probability of winning a game is 0.9 then, the probability of losing the game is

0.1

0.9

0.2

1

Q4. In an experiment, 100 drawing pins were dropped on a floor. 73 landed point up and the rest landed point down. A pin is selected at random and dropped. What is the probability that the pin will land point down?

0.73

0.27

0.37

0.72

Q5. The percentages of marks obtained by a student in six unit tests are given below:   Unit test I II III IV V VI Percentage of marks 53 72 28 46 67 61 If a test is selected at random then, the probability that the student gets more than 60% marks in the test is

0.5

0.3

0.2

0.6

Q6. An event for an experiment is defined as

Collection of happenings and non-happenings

Collection of probabilities

Collection of odd event and even event of the experiment

Collection of some outcomes of the experiment

Q7. A, B, C and D are the only possible outcomes of a trial. So  if P(A) + P(D) = 0.75, then P(C) + P(B) =

0.75

0.50

0.25

0.10

Q8. In a sample survey of 640 people, it was found that 400 people have a secondary school certificate. If a person is selected at random, the probability that the person does not have such certificate is

0.375

0.625

0.725

0.875

Q9. In a series of 6 cricket matches, the number of runs scored by the captain of a team are 54, 32, 48, 55, 29, 35. So in the next match, the probability that he will cross the half century is

0.33

0.24

0.35

0.48

Q10. In a survey of 364 children aged 2-4 years, it was found that 91 liked to eat potato chips. If a child is selected at random, the probability that he/she does not like to eat potato chips is:

0.25

0.50

0.75

0.80