Question

A bag has 4 red balls and 2 yellow balls .(The balls are identical in all respect other than colour).A ball is drawn from the bag without looking into the bag . What is probability of getting a red ball ?

Answer 1

Probability= possible outcomes/total number of outcomes

Possible outcomes(red balls)= 4

Total number of outcomes=6

Therefore, 4/6=2/3

Hence, the probability of drawing red ball from the bag= 2/3

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Answer 2

Probability of getting a red ball is $\frac{2}{3}$

Step-by-step explanation:

Probability is the ratio of number of favorable outcomes by the total outcomes.

$nC_r=\frac{n!}{r!\times (n-r)!}$

number of favorable outcomes = $^4C_1=\frac{4!}{3!}=4$

total outcomes = $^6C_1=\frac{6!}{5!}=6$

probability of getting a red ball = $\frac{4}{6}=\frac{2}{3}$

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