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Grade: 11 
        
How to solve this........................explain...................
one year ago

Answers : (1)

View Solution
Arun
23006 Points 
							
Tn = 2n +1 /1²+ 2²+....n² = (2n+1)/n(n+1)(2n+1)/6
 
Tn = 6 /n (n+1)
 
Now solve this
 
Tn = 6[1/n - 1/n+1]
 
Hope it helps
one year ago
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