Multiple choice general knowledge math & puzzles

What does "permutative" mean?

  1. a*b*c = d

  2. a*(b*c)d = (a*b)(c*d)

  3. a*b = b*a

  4. Permutative is not a mathematical term.===
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The term 'permutative' is not a standard mathematical property. The property $a*b = b*a$ is called 'commutative', and $a*(b*c) = (a*b)*c$ is called 'associative'. Therefore, the statement that it is not a mathematical term is correct.

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