Rational numbers satisfy associative property under addition.
(a+b)+c = a+(b +c)
subtraction is not associative in the set of rational numbers.
(a-b) -c ≠a - (b-c)
Multiplication is associative in rational numbers.
a×(b×c) = (a×b)×c
Division is not associative in rational numbers.
a÷(b÷c) ≠ (a÷b)÷c