1. Change the following numbers to base 10: i. 31247| ii. 123324 iii. 153669

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A: Actually, program is a executable software that runs on a computer.

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A: In this problem, we will discuss about the immutable datatype.

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A: The code is given below.

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A: I used python language for this.  Question :-

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A: Here below I written code for your problem in C#.

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A: Hi.   Let's move on to the code in the next step. I have included comments in the code that will…

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A: As no programming language is mentioned, it is solved using JAVA

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A:

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A: Dear Student, The code, implementation and expected output of your question is given below -

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A: C program to solve the given problem is below.

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A: I have answered this in step2