按规律填数40 ,31,24,19,16()
问题描述:
按规律填数40 ,31,24,19,16()
答
40 ,31,24,19,16(15)
相差的是9,7,5,3,1
按规律填数40 ,31,24,19,16()
40 ,31,24,19,16(15)
相差的是9,7,5,3,1