math

[kflowers]

find the difference between the sum of the first 100 positive multiples of three and the sum of the first 100 positive even integers.

 

[takariendire]

Hi KFlowers,

Here's a video recording of an anwser to your question :

http://www.blueteach.com/v/7F7RF8p9K508Rf1uIB

cheers !

 

[Deleted member 4993]

find the difference between the sum of the first 100 positive multiples of three and the sum of the first 100 positive even integers.

$\displaystyle S_t \ \ = \ \ 03 \ \ + \ \ 06 \ \ + \ \ 09 \ \ + 12 \ \ . . . \ \ + \ \ 294 \ \ + \ \ 297 \ \ + 300$ ......................(1)

$\displaystyle S_e \ \ = \ \ 02 \ \ + \ \ 04 \ \ + \ \ 06 \ \ + 08 \ \ . . . \ \ + \ \ 196 \ \ + \ \ 198 \ \ + 200$.......................(2)

if we subtract (2) from (1) .....continue