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A box contains 5 black and 5 red balls. Two balls are randomly picked one after another from the box, without replacement. The probability for both balls being red is
Option: 1
$\frac{1}{90}$

Option: 2
$\frac{1}{2}$

Option: 3
$\frac{19}{90}$

Option: 4
$\frac{2}{9}$

Answers (1)

best_answer

Probability for both balls being red (without replacement) ,

$=\frac{5}{10} \cdot \frac{4}{9}=\frac{2}{9}$

Posted by

Irshad Anwar

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