Maths / Arithmetic Progression / Sum of First n Terms

QUESTION

If the sum of 3 consecutive terms of an AP is zero and what will be their product ?

 OPTIONS A. 15 B. 3 C. 27 D. None of these
Right Option : D

EXPLANATION
Explain TypeExplanation Content
Text

If(a-d)+a+(a+d)=0

$\Rightarrow$ a=0

Thus,product =(a-d)a(a+d)=0

$S_K=[a\frac{k+1}{2}]$

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