The sum of ap 2,5,8......up to …

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The sum of ap 2,5,8......up to 50

Posted by Vansh Dahiya 3 years, 2 months ago

CBSE > Class 11 > Mathematics

1 answers

Ràśpŕèét Kaur 3 years, 2 months ago

We use the arithmetic prgression A=2 D=5-2=3 N=50 Sn=n/2[2a+(n-1) d] S50= 50/2[2*2+(50-1)3] S50=25[4+49*3] S 50= 25*4+147 S50=25*149 S50= 3725 answer

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