270
7
8
229
0
8
410
0
8
202
3
8
169
0
8
411
1
8
163
0
8
230
0
8
227
0
8
305
4
8
249
0
8
206
0
8
234
0
8
178
0
8
255
2
8
193
0
8
253
0
8
333
0
8
199
1
8
Didn't find what you're looking for? Try searching on Q&A, too!
Keyword(s): 中2 数学