Math, asked by gedamsuresh221, 1 year ago

find sum of all mltiple of 3, between 200 to300


laservictor2018: the answer will be 8517
gedamsuresh221: thnkx
janhavi32: o sorry I didn't read the question correctly
laservictor2018: its ok

Answers

Answered by laservictor2018
1
the answer will be 8517
by ap we know tn=a+(n-1)d
:300=201+(n-1)3
=>99/3+1=n
=> n=34
again sn = n/2(a+tn)
=>sn=34/2(201+300)
=17×501=8517
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