Math, asked by abhimanyukumar9313, 1 year ago

find the s um of all multiples of 3 , lying betw een 200 amd 300

Answers

Answered by Anonymous
2
HERE SERIES IS (201,204,207,.....297)

SUM OF THIS SERIES

FIRST FIND TOTAL TERM

201/3= 67. 297/3=99

therefore total number of term= 33


S33= 33/2{2(201)+32(3)}

= 33/2{402+96}

= 33/2(498)

= 33× 249

= 8217

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