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Mathematics 9 Online
OpenStudy (anonymous):

the sum of all two digit even numbers is? (A) 2475 (B) 2430 (C) 4905 (D) 1215

OpenStudy (anonymous):

even and its b

OpenStudy (anonymous):

@PRAKASHESWAR: sum of any number of even number will always a even number so answer in b

hartnn (hartnn):

if choices were not given

hartnn (hartnn):

then you can find sum of all 2 digit numbers and divide it by 2

hartnn (hartnn):

or to take a longer route, you can realize that you are finding the sum 10+12+14 +...98 and use the arithmetic series formula

OpenStudy (anonymous):

@PRAKASHESWAR: Close the question once you got it... :)

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