Find a natural number n, in canonical form, such than n/2=a^2 , n/3=b^3 , n/5= c^5 for some a,b,c (natural numbers)
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is divisible by 2, 3, and 5, so try . Then must be divisible by 3 and 5, must be divisible by 2 and 5, and must be divisible by 2 and 3. Hence one possible value for is .