

MCQOPTIONS
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1. |
If 4 bulbs are there each of which can be defective or non-defective then what is the probability that at least one bulb is non- defective? |
A. | 7/8 |
B. | 15/16 |
C. | 3/4 |
D. | 1/2 |
Answer» C. 3/4 | |