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Which Expressions Are Undefined?

publish date: 2026/05/10 21:13:13.140696 UTC

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Select all expressions that are undefined.

\(5 \div 0\)

\(0 \div 5\)

\(\dfrac{0}{0}\)

\(\dfrac{100}{0}\)

(1) \(5 \div 0\)

(2) \(\dfrac{0}{0}\)

(3) \(\dfrac{100}{0}\)

Any division where 0 is the divisor is undefined. \(0 \div 5 = 0\) is defined (0 is the dividend here).

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