If 4 bulbs are there each of which can be defective or non-defective t – 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

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