Câu 3. số?

\(8650, 8651, 8652, …, 8654, …, …\)

\(3120, 3121, …, …, …, …\)

\(6494, 6495, …, … , …, …\)

Giải

8650, 8651, 8652, 8653, 8654, 8655, 8656

3120, 3121, 3122, 3123, 3124, 3125

6494, 6495, 6496, 6497, 6498, 6499