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Use of Monotonicity for Proving Inequalities

Let A = a,b,c...

Question

Let $A = {a, b, c, d, e}$ and $B = {a, c, g, f} .$ Find $A - B$ and $B - A .$

{b, d, e}

;

{g, f}

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{b, d}

;

{f}

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{ϕ}

;

{g, f}

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{a, b, c, d, e}

;

{g, f}

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Solution

The correct option is A ${b, d, e}$ ; ${g, f}$
$A = {a, b, c, d, e}$
$B = {a, c, g, f}$
$A - B = {a, b, c, d, e} - {a, c, g, f} = {b, d, e}$
$B - A = {a, c, g, f} - {a, b, c, d, e} = {g, f}$

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Similar questions

A ∖ (B \cup C) = (A ∖ B) \cap (A ∖ C)

ξ

a, b, c, d, e, f, g, h

A =

b, c, d, e, f

B =

a, b, c, g, h

C =

c, d, e, f, g

C

^{'}

- B

^{'}

ξ = {a, b, c, d, e, f, g, h}, A = {b, c, d, e, f}, B = {a, b, c, g, h}

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A = {a, b, c, d, e, f}

B = {b, d, f, g}

A - B

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