Fussy Fiona wants to buy a new house but she doesn’t like house numbers that are divisible by 3 or by 5. If all the houses numbered between 100 and 150 inclusive are for sale, how many houses can she choose from?
Select one option, then click Submit.
24
25
26
27
28
Select an option, then submit.
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Intermediate Mathematical Challenge 2009 (2009)
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