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Probability Chapter 14 Exercise 14.1 Q No 17 and 19 CBSE Class 10 Maths
Автор: YPS Academic Solutions
Загружено: 2026-01-13
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Q 17: (i) a lot of 20 bulbs contain four defective ones . one bulb is drawn at random from the lot . what is the probability that this bulb is defective?
(ii) suppose the bulb drawn in (i) is not defective and is not replaced . now one bulb is drawn at random from the rest. what is the probability that this bulb is not defective?
Q 19: a child has a die whose six faces show the letters as given below
A,B,C,D,E,A
the die is thrown once . what is the probability of getting (i) A ? (ii) D ?
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