A jar contains 54 marbles each of which is blue, green or white. The probability of selecting a blue marble at random from the jar is `1/3,` and the probability of selecting a green marble at random is `4/9dot` How many white marbles does the jar contain?

Explanation

To solve the problem, we need to find the number of white marbles in the jar. We know the total number of marbles and the probabilities of selecting blue and green marbles. Let's break it down step by step.

### Step 1: Understand the total number of marbles
The total number of marbles in the jar is given as 54.

### Step 2: Calculate the number of blue marbles
The probability of selecting a blue marble is \( \frac{1}{3} \). This means that the fraction of blue marbles in the jar is \( \frac{1}{3} \) of the total number of marbles.

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