2 years ago

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Mathematics

2 answers:

laiz [17]2 years ago

4 0

Answer- D
Explanation

White raven [17]2 years ago

3 0

Answer:

Step-by-step explanation:

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Six hundred paving stones were examined for cracks, and 15 were found to be cracked. The same 600 stones were then examined for

9966 [12]

Answer: 0.01

Step-by-step explanation:

Let the events are :

C = paving stones found to be cracked.

D = paving stones found to be discolored.

Given : Total stones : T = 600 (i)

C = 15

D= 27

C'∩D'= 564 (ii)

Since C'∩D' = (C∪D)' = T- C∪D (iii)

From (i) , (ii)and (ii) , we have

564 = 600- C∪D

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Formula : C∩D= C+D- C∪D

Put values , we get

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Now ,

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The probability that it is both cracked and distorted is 0.01.

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