Câu trả lời:
25 + 612 + 286 + 9982
= 637 + 286 + 9982
= 913 + 9982
= 10905
25 + 612 + 286 + 9982
= 637 + 286 + 9982
= 913 + 9982
= 10905
25 + 612 + 286 + 9982
= 637 + 286 + 9982
= 913 + 9982
= 10905
25 + 612 + 286 + 9982
= 637 + 286 + 9982
= 913 + 9982
= 10905
25 + 612 + 286 + 9982
= 637 + 286 + 9982
= 913 + 9982
= 10905