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A bag contains 3 red and 2 yellow marbles. A marble is drawn at random. What is the probability of drawing a red marble?

A bag contains 3 red and 2 yellow marbles. A marble is drawn at random. What is the probability of drawing a red marble? Correct Answer 3/5

There are totally 5 marbles in the bag.

The total numbers of ways of selecting one marble out = 5C1 = 5 ways

Let E be the event of selecting a red marble.

Since, the bag contains 3 red marbles,

∴ one red marble can be drawn from 3 red = 3C1 = 3 ways

∴ P(E) = n(E)/n(S) = 3/5

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