Math, asked by ronitchopra, 1 year ago

In a bag, there are 100 bulbs . Out of which 30 bulbs are defective ones , a bulb is taken out of the bag at random . Find the probability of the selected bulb to be a good one .

Anonymous: Ans is 7/10

Answers

Answered by PeehuChouksey

161

good bulbs=100-30=70
and probability=no.of possible outcomes/total no. of outcomes

70/100=7/10 =0.7....

GovindKrishnan: Check my detailed answer if you are confused. :)

PeehuChouksey: yes I'm sure

GovindKrishnan: 7/10 or 0.7 is the answer

ronitchopra: Ok thanks

PeehuChouksey: my ans. is short but it's also ain't confusing

PeehuChouksey: wlcm:-)

Anonymous: @peehuchouksey plz see that you have written something wrong

Anonymous: You have written good bulbs = 100-70

PeehuChouksey: ya i saw...I have just corrected it...

PeehuChouksey: that was by mistake ..sry

Answered by GovindKrishnan

281

Hey There! ☺

Nice Question! ♥

Here is your answer :

Probability (event) = No. of favourable outcomes / Total no. of outcomes

Here,

No. of Bulbs = 100

Therefore, Total Outcomes = 100

No. of defective bulbs = 30

No. of good bulbs = Total no. of bulbs - No. of defective bulbs = 100 - 30 = 70

Hence, No. of favourable outcomes = 70

Thus,

P (taking good bulb) = 70/100 = 7/10

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Hope my answer helped... ☺

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GovindKrishnan: Hope u got it ☺

Anonymous: Good explaination:-)

GovindKrishnan: Thanks! ♥

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