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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Mar 2007 03:52:09 IST
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Clearly a = 1
b = 1 + 2 + 3 + ...... + 20 = 210
c can be found by taking products of roots taken two at a time.
c = (1)(2+3+......+20) + (2)(3+4+5+....+20) + ....... + (19)(20)
Hence you can found a+b+c
Vish you are correct in your approach.
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Bipin Kumar Dubey
Chemical Dept.
IIT Kharagpur
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this reply: 5 points
(with 1 
in 1 votes ) [?]
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