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Sum-of-multiples: Add information to the description. #961

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6 changes: 3 additions & 3 deletions exercises/sum-of-multiples/description.md
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
Given a number, find the sum of all the multiples of particular numbers up to
Given a number, find the sum of all the unique multiples of particular numbers up to
but not including that number.

If we list all the natural numbers up to but not including 20 that are
multiples of either 3 or 5, we get 3, 5, 6 and 9, 10, 12, 15, and 18.
If we list all the natural numbers below 20 that are multiples of 3 or 5,
we get 3, 5, 6, 9, 10, 12, 15, and 18.

The sum of these multiples is 78.