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 2 years ago
how many numbers between 25 and 400 are divisible by 11? what is their sum?
 2 years ago
how many numbers between 25 and 400 are divisible by 11? what is their sum?

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amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1well, it starts with the number 33

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0can u pls show the equation sir???

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.140025 = 375 possible results divide that by ll 375/11 = 34.1 so ill assume there is like 34 numbers in that

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1there sum can be determined by the expression 33+11n from n=0 to 34 most likely

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0wait sir... 33+11n=????

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.134 11  34 34  374 11  385 11  396 .... found a few more

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1pfft, for got to add 33 :) 374 +33  407 so it looks like 34 is too large and 33 is perfect 0 to 33

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1this time i am right i double checked it

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0can i ask for the solution sir??? because the solution is greatly needed

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.133+11n i s a good expression yes since the first number divisible by 11 is 33

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0how to get the n sir???

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1\[\sum_{0}^{33}33+11n=\frac{33}{2}(33+374)\]

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1a=33 l=396 d=11 n=(39633/11)+1=35 sum=(35)(2(33)+34(11))/2 =7480 use the formula i gave u earlier

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1http://www.wolframalpha.com/input/?i=table+%2833%2B11n%29%2C+n%3D0..33

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0thanks to to all of you friends :D

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0why is sambhav answer is different?

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1he most likely has a small error, or i do. but ive got the wolf to dbl chk me :) http://www.wolframalpha.com/input/?i=sum+%2833%2B11n%29%2C+n%3D0..33

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1hey @amistre64 ur formu;lla is correctbut ∑03333+11n=332(33+374) =6715.5

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1yeah, 374 should have been 396 :) but i accounted for that afterwards

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1you used another website for help i used my mind

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1at my age, the mind is not so good ;)

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0whats the correct answer monsieurs???

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1i have to look at my left foot just to remember what color sock i need to put on the right foot :)

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1∑03333+11n=(35/2)(33+396)=7507.5

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1whats ur age @amistre64

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0sambhav and amistre what again is the answer???

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1pls wait for a minute pls sorry for the argument between us

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0its just ok no hard feelings

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.10 to 33 is 34 numbers entotal 34(33+396)/2 = 7293

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0its right tnx for all your help ive got 2 numbers to go can u cooperate me or help me sir???

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1between the both of us, we are sure to work out all the wrinkles ;)

sambhav__jain
 2 years ago
Best ResponseYou've already chosen the best response.1@bienes_joshua the write answer is 7293

bienes_joshua
 2 years ago
Best ResponseYou've already chosen the best response.0much thanks of all your help i just need to finish the 2 problems i will close this question and write a new one :D

amistre64
 2 years ago
Best ResponseYou've already chosen the best response.1starting an index at 1 makes life easier on the count but adds a little bit of complexity to the expression; therefore a modification that is equal is:\[\sum_{1}^{34}33+11(n1)\]
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