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Sum of the ages of my five niece is 47, ages of any two of them have a common divisor greater than 1. How old is eldest?

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Sum of the ages of my five niece is 47, ages of any two of them have a common divisor greater than 1. How old is eldest?
posted Nov 20, 2018 by anonymous

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1 Answer

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15 years old


Ages are 6, 6, 10, 10, 15
6 & 10 have divisor 2, 6 &15- divisor 3, 10 & 15- divisor 5
Eldest is 15 years old

answer Nov 27, 2018 by Hanifa Mammadov



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