Մաթեմատիկա

5*5+5+5*5=55                                      6*6-6+6*6=66

47+25=72*10=720:9=80-16=64+17=81-34=47

1. 53000, 54700, 54800/54806 /54810, 54900, 55000
2. 54810/54820/54830
3. 54810,54823/54830
4. 54820/54838/54840
5. 54830/54849/54850
6. 54840/54858/54860
7. 54850/54869/54870