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श्रेणी (2)/(9)-(1)/(3)+(1)/(2)-… के कित...

श्रेणी `(2)/(9)-(1)/(3)+(1)/(2)-…` के कितने पदों का योग `(55 )/(72 )` है ?

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How many terms are needed of the series (2)/(9)-(1)/(3)+(1)/(2)-… to give the sum (55)/(72) ?

How many terms are needed of the series (2)/(9)-(1)/(3)+(1)/(2)-… to give the sum (55)/(72) ?

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Find how many terms of G.P. (2)/(9)-(1)/(3)+(1)/(2) . . . . .. . . . . . must be added to get the sum equal to (55)/(72) ?

How many terms of the G.P. (2)/(9),-(1)/(3),(1)/(2), . . . . . . . . . . . must be added to get the sum equal to (55)/(72) ?