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

1. 1
2. 2
3. 0
4. None of these

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

1. 0
2. -1
3. 1
4. Lies between 0 and 1.

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

1. 0.1
2. 0.9
3. 0.2
4. 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?

1. 0.73
2. 0.27
3. 0.37
4. 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

1. 0.5
2. 0.3
3. 0.2
4. 0.6

Q6. An event for an experiment is defined as

1. Collection of happenings and non-happenings
2. Collection of probabilities
3. Collection of odd event and even event of the experiment
4. 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) =

1. 0.75
2. 0.50
3. 0.25
4. 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

1. 0.375
2. 0.625
3. 0.725
4. 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

1. 0.33
2. 0.24
3. 0.35
4. 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:

1. 0.25
2. 0.50
3. 0.75
4. 0.80