To make it easier to understand, we just have to take this logic : 1 . If on a WEDNESDAY at 6 pm you take medicine and they tell you that you must take it every 1st day. . . When do you take the next q ? Well, Thursday at 6 pm. 2 . But if they tell you to take it every 2nd. day. . . When do you take the next q ? Well, Friday at 6 pm3. And if they tell you to take it every 3rd. day, when do you take the next one? Saturday at 6 pm???????
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