#1**+9 **

2+4+6...+100+102+104 is equal to 10920. The remainder of 10920 divided by 7 is 0.

So the answer is **0**

abmusical2021 Oct 27, 2021

#2

#4**+2 **

There are: [104 - 2] / 2 + 1 ==52 terms

[104 + 2] / 2 * 52 terms ==53 * 52 term ==**2,756 mod 7 ==5**

Guest Oct 27, 2021