Question

Look at the table. Make a conjecture about the sum of the first 20 positive even numbers.

The sum is 21 × 22.
The sum is 20 × 21.
The sum is 20 × 20.
The sum is 19 × 20.
can someone help me lol

Answer 1

\[2+4=6\\
2+4+6=12\\
2+4+6+8=20\\
2+4+6+8+10=30\]