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Find the sun of first 8 multiples of 3

Posted by Dhruv Baswal 6 years, 10 months ago

CBSE > Class 10 > Mathematics

1 answers

Bhumika Budhia 6 years, 10 months ago

AP. 3,6,9..........24 Sn = n/2 (a+an) = 4(3+24) = 4* 27 = 108

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CBSE > Class 10 > Mathematics