Math, asked by yashsharmackt, 11 months ago

please solve it guys are

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Answered by bodakuntalacchanna

1

Answer:

Given that,

a=550, d=10, n=21

sum of 21 terms=n/2[2a+(n-1)d]

=21/2[2(550)+(21-1)10]

=21/2[1100+200]

=21/2×1300

=21×650

=13650

Hope it works...........................™✌️✌️

Answered by sonisiddharth751

0

Answer:

hiiii mate

hope it helps you

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