Let ‘*’ be defined on the set N. Which of the following are both commutative and associative?
Posted: Wed Jul 13, 2022 8:06 pm
a) a*b=a+b
b) a*b=a-b
c) a*b=ab2
d) a*b=ab
b) a*b=a-b
c) a*b=ab2
d) a*b=ab
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