There are 250 tickets in an urn numbered 1 to 250 One ticket is chosen at random What is the probabi...........

Quantitative Aptitude ( CCS) Probability

There are 250 tickets in an urn numbered 1 to 250. One ticket is chosen at random. What is the probability of it being a number containing a multiple of 3 or 8?

52/125

53/250

67/125

101/250

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Explanation:

Multiples of 3 up to 250 = 250/3 = 83 (take only whole number before the decimal part)
Multiples of 8 up to 250 = 250/3 = 31
Multiples of 24 (3×8) up to 250 = 250/24 = 10
So total such numbers are = 83 + 31 – 10 = 104
So required probability = 104/250 = 52/125

Hence, option 1 is the correct answer.

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