Question

In a box containing 100 bulbs, 10 are defective. The probability that out of a sample of 5 bulbs none is defective, is :

• A. $\frac{1}{10}$
• B. $(\frac{1}{2})^5$
• C. $(\frac{9}{10})^5$
• D. $\frac{9}{10}$

Answer 1

Answer: (C)

$(\frac{9}{10})^5$

Answer 2

The correct option is (C):