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Three Mathematical Problems of Number Axis
The first question. Move one unit to the right every two steps. 100 steps later 19094. So the original location is 19044.

The second question. Between the origin and 30: 30 divided by 5 multiplied by 4=24. Beyond it: that is, 30: 30 divided by 3 times the right side of 4=40.

The third question. If mk/7 is an integer (k= 1, 2, 3, 4, 5, 6), then mk can be divisible by 7. For example, M =-3.5, K = 2, 4, 6-because there are three feasible k's, it does not meet the situation of only two points. Let's take k = 3,6, then m=-7/3. Because there are two complete points, M.