Starting from 2, add 101 addends, and find the sum of these even numbers
The 101st even number is 101 × 2 = 202
Summation of arithmetic sequence
(2+202)×101÷2=204÷2×101=102×101=10302
The 101st even number is 101 × 2 = 202
Summation of arithmetic sequence
(2+202)×101÷2=204÷2×101=102×101=10302