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# An Instrument Manufactured by a Company Consists of Two Parts a and B in Manufacturing Part A, 9 Out of 100 Are Likely to Be Defective and in Manufacturing Part B, 5 Out of 100 Are Likely to Be - Mathematics

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MCQ

An instrument manufactured by a company consists of two parts A and B in manufacturing part A, 9 out of 100 are likely to be defective and in manufacturing part B, 5 out of 100 are likely to be defective. Calculate the probability that both the instruments will not be defective.

#### Options

• 0 .91

• 0.86

• 0.95

• 0.83

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#### Solution

0.86
Explanation:

Given, part A is not defective P(A) = 91/100

and part B is not defective, P(B) = 95/100

∴ Required probability = P(A) x P(B)

= 91/100xx95/100

= 0.8645 = 0.86

Concept: Probability (Entrance Exam)
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