Question: Hello, I have real analysis questions. I need your help. Thank you so much. Thanks a lot. 10 Show that the set of real numbers

Hello, I have real analysis questions.

I need your help.

Thank you so much.

Thanks a lot.

Hello, I have real analysis questions. I needHello, I have real analysis questions. I needHello, I have real analysis questions. I need
10 Show that the set of real numbers that have a decimal expansion with the digit 5 appearing infinitely often is a Borel set.12 Suppose f: R - R is a function. (a) For k E Z+, let GK = {a ER : there exists 8 > 0 such that If (b) - f(c) |

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