2+4+6+8+...+202等于多少
问题描述:
2+4+6+8+...+202等于多少
答
2+4+6+8+...+202
= (2 + 202) + (4 + 200) + (100 + 104) + 102
= 204 × 50 + 102
= 10200 + 102
= 10302