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In a bag there are 100 bulbs out of which 30 are bad ones. a bulb is taken out of the bag at random. find the probability that the selected one is a good bulb.

Asked by sharikhariyaz88 24th February 2016, 11:57 PM
Answered by Expert
Answer:

begin mathsize 14px style T o t a l space b u l b s space i n space t h e space b a g equals 100 N o. space o f space b a d space b u l b s equals 30 rightwards double arrow N o. space o f space g o o d space b u l b s equals 100 minus 30 equals 70 L e t space E space b e space t h e space e v e n t space t h a t space t h e space s e l e t e d space b u l b space i s space g o o d. T h e n comma space P left parenthesis E right parenthesis equals 70 over 100 equals 0.7 end style

Answered by Expert 25th February 2016, 6:03 PM
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