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You are here,
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 | Re: progression |
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hi tg i just want to know is this approach is fair to proceed with this method a5 can be written as a+4d similarly other terms as a+9d+a+14d+a+19d like that all can be written and the equation can changed as 6a+69d=225 /3 2a+23d=75 for sum of 24 terms it is written 24/2(2a+23d)=12*75 it will be easier i think so |
