Calculation problem that strengthens to “10”_@12

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It is a random problem of insect-eating calculation of combinations that add up to 10, subtraction of something from 10, and subtraction of 10 from numbers up to 19.

There are 12 questions on one page. 200 pages. I don’t see the same problem on one page. 20 questions are randomly extracted from 36 questions.

problem

@12_ Problem thumbnail getting stronger to 10

answer

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