Although it is unknown if one must buy 1, 10, or 100 scratch-off lottery tickets to get a winning ticket, it is probable that if one keeps buying, eventually one will get a winner. in fact, maybe the very next ticket will be a winner. therefore, buying scratch-off lottery tickets is reinforced according to a schedule.

Variable ratio

Explanation:

A variable-ratio schedule is a reinforcement schedule in which, after an uncertain number of answers, a response is strengthened.

This schedule produces a consistent, high participation percentage.

Betting and lottery games are perfect examples of such ratio schedule.

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