Question

600 electric bulbs contains 12 defective bulbs. probability of getting non defective bulbs

Answer 1

Probability of getting non defective bulb is
588/600

Answer 2

No. OF TOTAL Bulbs=600
No .defective bulbs =12
No .non defective bulbs =600-12=588
$probabilty = \frac{no \: of \: non \: defective \: bulbs}{total \: bulbs}$
$\frac{588}{600} = 0.98 = 98\%$

Therefore the probabilty of getting non defective bulbs is 98 percent