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S=1/(1!+2!)+1/(2!+3!)+1/(3!+4!)+...+1(/(19!+20!) Then fins S

S=1/(1!+2!)+1/(2!+3!)+1/(3!+4!)+...+1(/(19!+20!) Then fins S

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Grade:12th pass

1 Answers

Arun
25750 Points
3 years ago
Dear student
 
Tn = 1 /r! + (r+1)! = 
 
Now use sigma propwrties to get the answer.
Hope you understand
 
Thanks and regards
Arun

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