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OpenStudy (mayankdevnani):
Challenging question...... (From Ch. Arithmetic Progression)
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OpenStudy (whpalmer4):
hey, you post a title like "challenging question" and it's like catnip for math geeks :-)
OpenStudy (mayankdevnani):
If \(\large a_1,a_2.....,a_{n+1}\) are in A.P, then \(\large \frac{1}{a_1a_2}+\frac{1}{a_2a_3}+.........+\frac{1}{a_na_{n+1}}\) is :
OpenStudy (dan815):
lol
OpenStudy (mayankdevnani):
what??? @dan815
OpenStudy (experimentx):
make use of partial fraction and use telescoping
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OpenStudy (mayankdevnani):
i don't understand??? experiment
OpenStudy (dan815):
can u write out Sn of 1 and 2 and 3 see if u find a pattern
OpenStudy (experimentx):
|dw:1369721781336:dw|
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