Hi there,
I'm having trouble with this questions...

Could you please give do a step by step solution to this question:

The sum of the first "n" natural numbers is 1/2n(n+1)

How many do you have to add to exceed 1000?

Thanks

so, we form an equation



Now we solve it for n.



You can solve this quadratic however you wish to. You'll need to round your answer up to get the right answer to the question.

Thank-you so much for your answer
It really helps

Sorry, was it or ? - I'm thinking the latter - i didn't check when i wrote the above.

This is why you must be careful of the notation you used for equations, it can be ambiguous.

For the latter:



and solve in the same way, rounding up.

Yea I knew I typed the first one wrong
Thank you anyway for the help
Much appreciated