Question

Explain addition and multiplication principle of counting

Answer 1

Addition,

a+b=b+a(commutative property)

a+(b+c)=(a+b)+c(associative property)

a+b=c(closure property)

a+0=a(identity)

multiply,

a(b)=c(closure property)

a*b=b*a(cumulative property)

a(b*c)=(a*b)c(associative property)

a*1=a(identity)

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Answer 2

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