Planet of Thinking
IMPLEMENTATION, VIDEO-LESSONS


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23.

Winnie the Pooh, Rabbit, Piggy and Donkey study in different grades: first, second, third and fourth. Rabbit and Winnie the Pooh study neither in the first nor in the second grade. Find who studies in which grade if Piggy is older than Donkey and Winnie the Pooh is older than Rabbit?


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