X=101+202+303+⋯+5050Y=22+42+62+⋯+1002
Which is bigger, X or Y?
Y, beacuse if you simply look at it, even though it starts at a smaller number, it has 100 terms and the last term (100^2) is 10000 which is way bigger. So from here, I strongly belive that Y is larger.
As follows