S=1/(1!+2!)+1/(2!+3!)+1/(3!+4!)+...+1(/(19!+20!) Then fins S
DASARI NAGESWARA RAO , 4 Years ago
Grade 12th pass
IIT JEE Entrance Exam> S=1/(1!+2!)+1/(2!+3!)+1/(3!+4!)+...+1(/(1...
1 Answers
Arun
Last Activity: 4 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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