Question 1193917
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In such problems, the answer is the product of some participating numbers.


But 222 = 2*111 = 2*3*37,  and the number 37 is not among the input numbers.


Therefore, the answer in the textbook, mentioned in your post, is INCORRECT.



In our days, there are many pseudo-textbooks in the Internet, written/composed by pseudo-specialists for pseudo-students.