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1. |
The probability that a bulb produced by a factory will fuse after 150 days of use is 0.05. What is the probability that out of 5 such bulbs none will fuse after 150 days of use |
A. | \[1-{{\left( \frac{19}{20} \right)}^{5}}\] |
B. | \[{{\left( \frac{19}{20} \right)}^{5}}\] |
C. | \[{{\left( \frac{3}{4} \right)}^{5}}\] |
D. | \[90\,{{\left( \frac{1}{4} \right)}^{5}}\] |
Answer» C. \[{{\left( \frac{3}{4} \right)}^{5}}\] | |