1,2,6,7,3,5,,13,15 4,9,,,10,11,17,,20 按规律填数!
问题描述:
1,2,6,7,3,5,,13,15 4,9,,,10,11,17,,20 按规律填数!
答
9 3 9 18 12 7 9
1,2,6,7,3,5,,13,15 4,9,,,10,11,17,,20 按规律填数!
9 3 9 18 12 7 9