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`        If in a series,Tn= (n+1)/(n+2)!  then ∑10n=0 tn  is equal then prove that it is equal to 1-1/12! `
2 years ago

Arun
23329 Points
```							Dear Nishtha On solvingTn = 1/(n+2)(n+1) Tn = [1/n+1  -  1/n+2]Now open sigma from n = 0 t0 n = 10 Sum = [1/1 - 1/2 ]+[1/2 - 1/3]+[1/3 - 1/4]+......[1/11 - 1/12]All the terms are cancelled out except 1 and 1/12 Sum = 1 - (1/12)  RegardsArun (askIITians forum expert)
```
2 years ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions