Question

Find the sum of all 3 digit positive numbers divisible by 7

I'm getting stuck somewhere...

Answer 1

Okay so I get the first term 104, last 994 and that it is arithmetic. Though I'm not sure if I'm putting it into the sum formula correctly:

142= number of terms

142(105+994) (1/2) and then getting 78029...not sure if that is the right answer

Answer 2

the last term was correct, but not the 1st term. it should 105, right ?

Answer 3

Woops, typed that wrong. Yep you are correct.

Answer 4

if so, you are right :)

Answer 5

Oh great! For some reason I had a different number down as the answer and was wondering if that was wrong or something I did was wrong. Thanks for the help!

Answer 6

you're welcome :)