JEE Math Practice Question
A box contains 10 pens of which 3 are defective. A sample of 2 pens is drawn at random and let $X$ denote the number of defective pens. Then the variance of $X$ is
- A.$\frac{11}{15}$
- B.$\frac{2}{15}$
- C.$\frac{3}{5}$
- D.$\frac{28}{75}$
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