A lot consists 144 balls pens of which 20 are defective. The customers will buy a ball pen if its is good, but will not buy a defective ball pen. The shopkeeper draws one pen at random from the lot and gives it to the customers. What is the probability that
customer will not buy the ball pen.

A lot consists of 144 ball pens of which 20 are defective and others 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?

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?

A lot consists of 144 ballpoint pens of which 20 are defective and others good. Tanvy will buy a pen if it is good, but will not buy it if 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 48 mobile phones of which 42 are good, 3 have only minor defected and 3 have major defects. Varnika will but a phone if its is good but the trader will only buy a mobile, if it has no major defect. One phone is selected at random from the lot. What is the probability that t is (i) accetable to Varnika? (ii) acceptable to the trader.

A lot of 25 bulbs contain 5 defective ones. One bulb is drawn at random from the lot. What is the probability that the bulb is good.

A lot consists of 48 moblie phone of which 42 are good , 3 have only minor defects and 3 have major defect. Varnika will buy a phone , if it is good but the trade will only buy a moblie if it has no mojar defect.One Phone is selected at random from the lot what is probability that it is . (i) acceptable to Varnika ? (ii) acceptable to trade ?

A lot of 20 bulbs contains 4 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective?

A lot of 20 bulbs contain 4 defective ones.One bulb is drawn at random from the lot.What is the probability that this bulb is defective?

A lot of 20 eggs contains 5 defective eggs . One egg is drawn at random from the lot . What is the probability that (i) This egg is defective ? (ii) This egg is not defective ?