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Thea has a key on her calculator marked *. If an integer is displayed, pressing the * key chops off the first digit and moves it to the end. For example, if 6138 is on the screen, then pressing the * key changes the display to 1386.

Thea enters a positive integer into her calculator, then squares it, then presses the * key, then squares the result, then presses the * key again. After all these steps, the calculator displays 248. What number did Thea originally enter?

 Oct 24, 2020
 #1
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See the answer here: Check the numbers in your question carefully. 248 maybe 243.

 

https://web2.0calc.com/questions/help_80499

 Oct 24, 2020
 #2
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Yes, your numbers are wrong.

 Oct 24, 2020

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