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MATH / What is the smallest whole number b such that 47 can be expressed in base b using only two digits?

Problem

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problem

What is the smallest whole number bb such that 47 can be expressed in base bb using only two digits?
Plain-text mathematical notation (without MathML)
What is the smallest whole number b such that 47 can be expressed in base b using only two digits?
Original LaTeX notation
What is the smallest whole number $b$ such that 47 can be expressed in base $b$ using only two digits?

level

Level 3

type

Number Theory

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Source and history

Official source

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