21. A box contains 28 bulbs of which 7 bulbs are defective, a bulb is

1.	21. A box contains 28 bulbs of which 7 bulbs are defective, a bulb is drawnrandomly from the box. Find the probability of picking a non-defectivebulb.
Answer» ANSWER: the no of which are NON defective=28-7=21 the PROBABILITY of event=21/28=3/4

21. A box contains 28 bulbs of which 7 bulbs are defective, a bulb is drawnrandomly from the box. Find the probability of picking a non-defectivebulb.

Answer»

ANSWER:

the no of which are NON defective=28-7=21

the PROBABILITY of event=21/28=3/4

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21. A box contains 28 bulbs of which 7 bulbs are defective, a bulb is drawnrandomly from the box. Find the probability of picking a non-defectivebulb.​

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21. A box contains 28 bulbs of which 7 bulbs are defective, a bulb is drawnrandomly from the box. Find the probability of picking a non-defectivebulb.