Interview Q&A / Aptitude
Aptitude interview questions
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- A number is picked at random from 1 to 50. What is the probability that it is divisible by 3 or 5?
23/50. Multiples of 3: 16. Multiples of 5: 10. Multiples of both (15, 30, 45): 3. By inclusion-exclusion, 16 + 10 - 3 = 23 favourable numbers out of 50.
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