Rules of Probability and Algebra MCQ (Multiple Choice Questions) PDF Download

If two events X and Y are considered as partially overlapping events then the rule of addition can be written as

1. P(X or Y) = P(X) - P(Y) + P(X and Y)
2. P(X or Y) = P(X) + P(Y) * P(X - Y)
3. P(X or Y) = P(X) * P(Y) + P(X - Y)
4. P(X or Y) = P(X) + P(Y) - P(X and Y)

If a person buys a lottery, the chance of winning a Toyota car is 60%, the chance of winning Hyundai car is 70% and the chance of winning both is 40% then chance of winning Toyota or Hyundai is

1. 0.6
2. 0.9
3. 0.8
4. 0.5

The probability without any conditions of occurrence of an event is considered as

1. conditional probability
2. marginal probability
3. non conditional probability
4. occurrence probability

If a bag contains three fruits, 16 percent are apples, 30 percent are oranges and 20 percent some other fruit that is neither oranges nor apples then the probability of selecting an orange randomly is

1. 0.3
2. 0.45
3. 0.65
4. 0.034

In a Venn diagram used to represent probabilities, the occurred events are represented by

1. circle
2. rectangle
3. square
4. triangle