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If 4 bulbs are there each of which can be defective or non-defective then what is the probability that all the bulbs are defective?(a) 1/8(b) 1/16(c) 1/4(d) 1/2I have been asked this question in homework.The query is from Probability in chapter Probability of Mathematics – Class 11

Answer»

The correct choice is (b) 1/16

To EXPLAIN: Each bulb can have two cases i.e. either defective or non-defective. Then total NUMBER of outcomes will be 2^4 = 16.

So, the PROBABILITY that all the BULBS are defective is 1/16.



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