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How many terms of AP -6,-11/2,-5......will …

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How many terms of AP -6,-11/2,-5......will give the sum zero Pls amswer fast

Posted by Riya Jain 6 years, 11 months ago

CBSE > Class 10 > Mathematics

2 answers

Riya Jain 6 years, 11 months ago

Thank you

Ram Kushwah 6 years, 11 months ago

0=n/2(-12+(n-1)×(1/2))

n(-12+ n/2 -1/2)=0

Or -24+n-1=0

n=25

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