Question

the difference of (1,2,3) and (1,2,5) is the set ?????

Answer 1

the difference of the second set from the first set is 3

Answer 2

$\displaystyle\huge\red{\underline{\underline{Solution}}}$

FORMULA TO BE IMPLEMENTED

DIFFERENCE

Difference of two subsets A and B is a subset of U, denoted by A - B and defined as

$\sf{ A - B = \{ x \in A : x \notin\: B\: \}}$

TO DETERMINE

$\sf{ The \: difference \: of \: the \: sets \: \{1,2,3 \} \: and \: \{1,2,5 \}\: }$

CALCULATION

$\sf{ \: Let \: A = \{ 1,2,3 \} \: and \: B = \{ 1,2,5 \} \: }$

$\sf{ \therefore \: \: A - B= \{ \: 3 \} \: \: }$

$\sf{ \therefore \: \:B - A = \{ \: 5 \: \} \: \: }$

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LEARN MORE FROM BRAINLY

Represent all possible one-one functions from the set A = {1, 2} to the set B = {3,4,5) using arrow diagram.

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