2 100-2 99 If x=1^2-2^2+3^2-4^2+5^2-6^2+.........+99^2-100^2 y=1^2+2^2+3^2+4^2+5^2 If x=1^2-2^2+3^2-4^2+5^2-6^2+.........+99^2-100^2 y=1^2+2^2+3^2+4^2+5^2 If x=1^2-2^2+3^2-4^2+5^2-6^2+.........+99^2-100^2 y=1^2+2^2+3^2+4^2+5^2 Check Details ← 2100.00 2 100 Divided By 7 → Share with friends Link copied