Euler #1

[GSG]

http://codepen.io/gsg/pen/fLkyF

Problem:

If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

I verified manually for <10 and <100 and in both cases the answer is right. What’s wrong with this code?

[__]

@GSG

please DO NOT post pens that use alert.

please edit your pen and remove the alert function.

.

Beyond that, I’m not sure I follow your question. However, you say:

Find the sum of all the multiples of 3 or 5 below 1000.

but your code seems to find the sum of all natural numbers below 1000 multiplied by 3 where the product is below 1000, and multiplied by 5 where the product is below 1000. I don’t know if this is a problem with the way you’re writing the code, or the way you’re reading the question.

In either case, this sounds like a homework question…? We’re not here to do homework for you. If there’s a specific question you’re asking, I’d be happy to help.

[GSG]

Sorry for the alert.

My question is why my code works correctly for multiples below 10, 100(I verified manually) but doesn’t work for 1000(the result is wrong).

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