Assertion (A): A bag contains 4 red, and 8 blue marbles. If a marble is drawn at random, then the probability of drawing a red marble is . Reason (R): Probability of an event A is given by P(A) = . 1. A is true, R is false 2. A is false, R is true 3. Both A and R are true 4. Both A and R are false

Question

KnowledgeBoat · Accepted Answer

Total number of outcomes = 4 + 8 = 12 Let E be the event of drawing a red marble. The number of favorable outcomes of the event E = 4. Therefore, Assertion (A) is true. This formula is incorrect. The correct formula for probability is the reciprocal of what is stated: Reason (R) is false. A is true, R is false Hence, option 1 is the correct option.

Mathematics

Assertion (A): A bag contains 4 red, and 8 blue marbles. If a marble is drawn at random, then the probability of drawing a red marble is . Reason (R): Probability of an event A is given by P(A) = . 1. A is true, R is false 2. A is false, R is true 3. Both A and R are true 4. Both A and R are false

Probability

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