The Student Room Group
Reply 1
How can we write numbers in that form?
Reply 2
I got the answer for it
Reply 3
Where n is any natural number, k=17n+5k=17n+5
[latex]\displaystyle\sum_{i=1}^{\587} 17n+5 latex]

Here is how i got 587=(10000-5)/17

Then using the equation for Arithmetic Progresion Sn=n2(2a+(n1)dS_n=\frac{n}{2}(2a+(n-1)d

I hope you understand it. Reply with your answer and i will tell you what i got then we can measure it against each others.

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