A glass jar contains 6 red, 5 green, 4 blue, and 5 yellow marbles of same size. Hari takes out a marble of red colour. What is the probability that the chosen marble is of red colour?

\frac{2}{5}

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\frac{4}{5}

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\frac{3}{10}

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\frac{7}{10}

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Solution

The correct option is C $\frac{3}{10}$
The jar contains 6 red, 5 green, 4 blue, and 5 yellow marbles of same size. Then, the probability that the chosen marble is of red colour
$= \frac{Number of red marbles}{Total number of marbles} = \frac{6}{6 + 5 + 4 + 5} = \frac{6}{20} = \frac{3}{10}$

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Question 32

A glass jar contains 6 red, 5 green, 4 blue and 5 yellow marbles of same size. Hari takes out a marble of red colour. What is the probability that the chosen marble is of red colour?

(a) $\frac{7}{10}$
(b) $\frac{3}{10}$
(c) $\frac{4}{5}$
(d) $\frac{2}{5}$

A glass jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a single marble is chosen at random from the jar, what is the probability of choosing a red marble?

A jar contains 6 red, 5 green, 8 blue and 3 yellow marbles. If a marble from this jar is taken out randomly then the probability of getting a red marble is :

Q. Bag A contains

3

Red Marbles and

4

Blue Marbles.
Bag B contains

5

Red Marbles and

3

Blue Marbles.
A marble is taken from each bag in turn. What is the probability of getting a marble of each colour?

Q. A bag contains five green marbles, three blue marbles, two red marbles, and two yellow marbles. One marble is drawn out randomly.
a) Are the four different colour outcomes equally likely? Explain.
b) Find the probability of drawing each colour marble
i.e., P(green), P(blue), P(red) and P(yellow)
c) Find the sum of their probabilities.

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A glass jar contains 6 red, 5 green, 4 blue, and 5 yellow marbles of same size. Hari takes out a marble of red colour. What is the probability that the chosen marble is of red colour?

The correct option is C 310The jar contains 6 red, 5 green, 4 blue, and 5 yellow marbles of same size. Then, the probability that the chosen marble is of red colour =Number of red marblesTotal number of marbles=66+5+4+5=620=310

The correct option is C $\frac{3}{10}$
The jar contains 6 red, 5 green, 4 blue, and 5 yellow marbles of same size. Then, the probability that the chosen marble is of red colour
$= \frac{Number of red marbles}{Total number of marbles} = \frac{6}{6 + 5 + 4 + 5} = \frac{6}{20} = \frac{3}{10}$