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A great deal comprises of 144 ball pens of which 20 are deficient and the others are acceptable. Nuri will purchase a pen in case it is acceptable, yet won’t accepting in case it is damaged. The retailer draws one pen indiscriminately and offers it to her. What is the likelihood that
A great deal comprises of 144 ball pens of which 20 are deficient and the others are acceptable. Nuri will purchase a pen in case it is acceptable, yet won’t accepting in case it is damaged. The retailer draws one pen indiscriminately and offers it to her. What is the likelihood that
CBSE | Class 10 | Exercise 15.1 | Maths | NCERT | Probability
A great deal comprises of 144 ball pens of which 20 are deficient and the others are acceptable. Nuri will purchase a pen in case it is acceptable, yet won’t accepting in case it is damaged. The retailer draws one pen indiscriminately and offers it to her. What is the likelihood that

(I) She will get it?

(ii) She won’t get it?

Arrangement:

The all out quantities of results for example pens = 144

Given, quantities of inadequate pens = 20

∴ The quantities of non inadequate pens = 144-20 = 124

P(E) = (Number of positive results/Total number of results)

(I) Total numbers occasions in which she will get them = 124

In this way, P (purchasing) = 124/144 = 31/36 = 0.86

(ii) Total numbers occasions in which she won’t get them = 20

Along these lines, P (not accepting) = 20/144 = 5/36 = 0.138

i

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