When a student takes a piece of rubbish from the floor or ground and throws it into the rubbish bin everyday for a week. The next week, a student takes two pieces of rubbish from the floor or ground and
throws them into the rubbish bin. And then, another week, a student takes three pieces of rubbish from the floor or ground and throws them into the rubbish bin. Will our school be free from rubbish?
throws them into the rubbish bin. And then, another week, a student takes three pieces of rubbish from the floor or ground and throws them into the rubbish bin. Will our school be free from rubbish?
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