khó đếm lắm các bn ạ. 4 hình vuông nhỏ có thể ghép lại thành 1 ô vuông lớn mà xong rồi lại ghép xen kẽ nữa hại não lắm

1+1+1<6

2+2+2=6

3x3-3=6

4+4+4>6

5:5+5=6

6-6+6=6

7+7+7>6

8+8+8>6

9+9+9>6

TBC của các só đó là:
( 11 + 1 ) : 2 = 6

Đáp só: 6

Người thứ ba làm được :

         1 - 1/3 - 2/5 = 4/15 ( số tiền )

Người thứ ba có :

         270 000 x 4/15 = 72 000 ( đồng )

                     Đáp số : 72 000 đồng

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TBC của các số đó là : 6

s bồn hoa là 0,6.0,6.3,14=1,1304m