Question

A bag contains 3 green and 7 red balls. A ball is drawn without looking into the bag. What is the probability of getting a red ball?​

Answer 1

Answer:

   7

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   10

Step-by-step explanation:

Formula of Probability

no. of favrabal items                              7

----------------------------------                       ------

total no. of observation                          10

Answer 2

$No \: of \: green \: balls=3 \\ No \: of \: red \: balls=3 \\ Total \: No \: of \: balls=3+7=10 \\ probability= \frac{No \: of \: balls \: with \: specific \: colour}{total \: No \: of \: balls} \\ = \frac{7}{10}$