How many 3-digit numbers can be written with the digits… | StemPy Lab

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How many 3-digit numbers can be written with the digits… | StemPy Lab

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How many 3-digit numbers can be written with the digits 1 to 7, if a digit may be used again?

MathematicsEasyHigh School (11–12)Algebra › Permutations and Combinations A-Level Board Exam IB

Created by StemPy Lab

How many $3$ -digit numbers can be written with the digits $1$ to $7$ , if a digit may be used again?

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← Each toy robot is built from one of 4 heads, one of 6 bodies and one of 3 sets of wheels. How many different robots can be built?Simplify (8!)/(6! 2!) to a single whole number. →

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