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RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0use formula : s= a/(1r) with a=first term r=ratio=u2/u1=u3/u2

HELLSGUARDIAN
 2 years ago
Best ResponseYou've already chosen the best response.1its a geometric progression with contant ratio(r)=1/3 and its first term(a) is 1 hence we can use a formula for the sum of this g.p. as a(1r)

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0ok, a=1 and r=(1/3)/1 = 1/3 plug in a=1 and r=1/3 to that formula!

HELLSGUARDIAN
 2 years ago
Best ResponseYou've already chosen the best response.1sorry i did a mistake in the formula it will be a/(1r)

BlizzardofFire
 2 years ago
Best ResponseYou've already chosen the best response.0do u do it the same way when the question is 4/3+2/3+1/3...

HELLSGUARDIAN
 2 years ago
Best ResponseYou've already chosen the best response.1yes here the ratio(r) is 1/2 ..

RadEn
 2 years ago
Best ResponseYou've already chosen the best response.0oke, what's answer do u get ?
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