question 2

What is the base-10 representation of the value represented by the following base-7 number?

321

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question 3

What is the digit for the 2th place of the base-4 representation of the value known as 180 in base 10? Note that the digit for the 2th place indicates the quantity of base raised to the power of 2. In the notes, the digit for the 2nd place, for example, is denoted as d 2.

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question 4

What is the base-10 representation of the value represented by the following base-7 number?

436

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