Maths Probability Easy
A lot consists of 144 ball pens of which 20 are defective and the others are good. Nuri will buy a pen if it…
A lot consists of 144 ball pens of which 20 are defective and the others are good. Nuri will buy a pen if it is good, but will not buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that
- (i)She will buy it?
- (ii)She will not buy it?
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