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Which term of the A.P: 21,18,15,....is …

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Which term of the A.P: 21,18,15,....is -81? Also,is any term 0?

Posted by Sejal Malhotra 6 years, 10 months ago

CBSE > Class 10 > Mathematics

2 answers

Honey ??? 6 years, 10 months ago

8th term is 0

Rahul Kuntal Jaat Sahab 6 years, 10 months ago

An=a+(n-1)d -81=21+(n-1)-3 -81-21=(n-1)-3 -102=(n-1)-3 -102÷-3=n-1 34=n-1 34+1=n 35=n

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