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CMI Data Science 2025 | Part B | Question: 7

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Total number of number not divisible by 3 and 5 are = 999 - total number of numbers divisible by 3 or 5

numbers divisible by 3 = 1000/3 = 333

numbers divisible by 5 = 1000/5 =199

Now we need to subtract numbers that are counted twice which are divisble by both 3 and 5

numbers divisible by 15 = 1000/15 = 66

333+199−66=466
999−466=533​

533 is the answer

 
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