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Grade 10Magical Mathematics[Interesting Approach]

Please give me solution soon. you have to give at 1./2015^{2.. The solution may be clear}

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Ankit samar

8 Years agoGrade 10

1 Answer

Om

8 Years ago

r^thof this sequence can be represented by the general formula 1/r²

Sum of n terms terms = sigma r² = n/((n+1)*n) [as n²= (n(n+1))/2 ]

if we sustitute 2015 in the place on n ;

Sum of 2015 terms=

2015/((2015+1)2015)

=2015/(2016*2015)

=2015/(4062240)

=0.00049603174

So the solution to your answer is 0.00049603174

I hope this answer was helpful to you

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