hard · GMAT Quant
A technician is testing 4 identical units for defects. The probability that any single unit is defective is 0.3, and the status of each unit is independent.
What is the probability that at least one of the 4 units is defective?
- 0.0081
- 0.2401
- 0.7599
- 0.9919
- 0.1200
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