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How many integers between 100 and 150, inclusive, can be [#permalink]
 07 Dec 2003, 20:12
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How many integers between 100 and 150, inclusive, can be evenly
divided by neither 3 nor 5?
33
28
27
26
24
explain
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Director
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The set has 51 numbers.
11 of them are multiples of 5 (I counted on my fingers).
17 of them are multiples of 3. (51/17)
105, 120, 135, and 150 meet both criteria. (this should be easy too, identify the first one, and go on by fifteen)
24 numbers are divisible by one or the other or both
27 are not divisible by either number.
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