Question

2+4+6+....+2018
Urgent

Answer 1

2+4+6+2018=
=2(1+2+3+...+1009)=
=2×1009×1010:2=
=1009×1010=
=1019090

Answer 2

$2 + 4 + 6 + ... + 2018 = \\ \\ 2(1 + 2 + 3 + ...1009) = \\ \\ 2 \times 1009 \times 1010 \div 2 = \\ \\ 2 \times 1009 \times 505 = \\ \\ 1019090$