Question

A bag contains 3 red marbles, 5 black marbles, and 4 white marbles.Find the probability of getting one red marble.

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Answer 1

Answer:

Total marble= 3+5+4= 12

P(E)= 3/12= 1/4 is the answer of these question.

Answer 2

❍ Given :-

• 3 red marbles
• 5 black marbles
• 4 white marbles

❍ To Find :-

• Probability of getting one red marbles

❍ Solution :-

⇝ Total marbles = 3 + 5 + 4 = 12

We know that,

$\sf \fbox{Probability = \dfrac{Number \: of \: favorable \: outcomes}{Total \: number \: of \: outcomes}}$

$\sf→P(R) = \dfrac{Number \: of \: red \: marbles}{Total \: number \: of \: outcomes}$

$\sf→P(R) = \dfrac{ \cancel{3}}{ \cancel{12}}$

$\sf→P(R) = \dfrac{1}{4}$

Hence probability of getting red marbles is $\sf \dfrac{1}{4}$.