If A - 5- 6- 7- B - 1- 2- 3- 4- then number of elements in set A- B - B is

A∩ B=ϕ⇒ A B=A n((A B) × B) =n(A)· n(B) = 3· 4 = 12 ...

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Number of Elements in a Cartesian Product

If A = 5, 6, ...

Question

If $A = {5, 6, 7}, B = {1, 2, 3, 4}$ , then number of elements in set $(A - B) \times B$ is

24

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36

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12

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16

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Similar questions

If set A = {1, 2, 3} and set B = {2, 3, 5, 7}. Then the number of elements in A $\times$ B is ___

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C = {2, 4}

A \times (B - C)

A

3

B = {3, 4, 5}

(A \times B)

A = {1, 2, 3, 4, 5}, B = {2, 3, 6, 7} .

(A \times B) \cap (B \times A)

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