24; -12; 6; ... S-?
S=b₁/(1-q)
b₁=24
q=-12/24=-0,5 ⇒
S=24/(1-(-0,5))=24/1,5=16.
Ответ: S=16.
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24; -12; 6; ... S-?
S=b₁/(1-q)
b₁=24
q=-12/24=-0,5 ⇒
S=24/(1-(-0,5))=24/1,5=16.
Ответ: S=16.