How to jump on page 43 of the second volume of the fifth grade mathematics guidance series? The topic is: 72 pencils and 80 exercise books, awarded to several outstanding students on average.

This should still be a common factor: there are 2 more pencils, so the actual number of pencils allocated is 70; There are four exercise books missing, so the notebook actually needed is 84, which means the common divisor of 70 and 84 is needed.

The common divisor of 70 and 84 is 1.2.7.

The answer to this question should be 2 or 7. "Several excellent students" means students who don't have 1, and only two or seven students can be selected. But the terms you are offering now are incomplete. I guess the correct answer to this question should be 7. Do it yourself

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Looking for a good time to travel through the novel 3Q! ! ! ! ! ! ! ! !