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Anwesha Patel

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 ? NCERT Class 10 Math’s Chapter 15 Probability Page No. 310 Exercise 15.1 Question No. 21

Mridul Gupta

Find the area of the (i) quadrant OACB, (ii) shaded region. NCERT Class 10 Chapter 12 Page No. 237 Exercise 12.3 Question No. 11

Mridul Gupta

Find the area of the shaded region. (Use π = 3.14 and √3 = 1.73205). NCERT Class 10 Chapter 12 Page No. 236 Exercise 12.3 Question No. 10