Probability and Counting Rules Multiple Choice Questions with Answers – PDF Download

MCQ 1: According to combination rule, if the total number of outcomes are 'r' and distinct outcome collection is 'n' then combinations are calculated as:

1. n! ⁄ r!(n - r)!
2. n! ⁄ r!(n + r)!
3. r! ⁄ n!(n - r)!
4. r! ⁄ n!(n + r)!

MCQ 2: The method of counting the outcomes in which the number of outcomes are determined while considering the ordering is classified as:

1. intersection combinations
2. union combinations
3. listed combination
4. permutations

MCQ 3: The method of counting the outcomes in which the number of outcomes are determined without taking care of the arrangement order is classified as:

1. listed combinations
2. union combinations
3. intersection combination
4. unlisted combinations

MCQ 4: Considering the combination rule of counting the outcome, the value of 5! Is:

1. 5
2. 120
3. 24
4. 20

MCQ 5: If a brown sack consists of 4 white balls and 3 black balls then the probability of one randomly drawn ball will be white is:

1. 4 ⁄ 7
2. 1 ⁄7
3. 4 ⁄ 4
4. 4 ⁄ 3