My 7-year-old son goes to this extra math class on Sundays. This is how they graded his Venn diagram homework. I'm sort of mad because I think he is correct. Is there any chance that he is ...

Will excitedly caught onto this, deciding that the sun and cooking create a Venn diagram, intersecting through music.

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Definition: Number theory is a branch of pure mathematics devoted to the study of the natural numbers and the integers. It is the study of the set of positive whole numbers which are usually called ...