Question #2891

Show me how to solve this problem
Multiply in the indicated base
12[sub]5[/sub]x 4[sub]5[/sub]

Expert's answer

Let's change the base to 10 and multiply the numbers in usual way:

12_{5} = 5*1 + 2 = 7

4_{5} = 4

7x_{4} = 28.

28_{10} = 5*5 + 3 = 53_{5}

Answer: 53_{5}.

12

4

7x

28

Answer: 53

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