Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 15 - Probability > A lot consists of 144 ball pens of which 20 are defective and others are good. Nuri will 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.
A lot consists of 144 ball pens of which 20 are defective and others are good. Nuri will 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.
