11. Let a,={1,2,3,4,5},b={2,3,6,7}. Then the number of elements in (ab)intersection(ba)

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Let A = {1, 2, 3, 4, 5}; B = {2, 3, 6, 7}. Then the number of elements in (A $\times$ B) $\cap$ (B $\times$ A) is

R = {P : B \subseteq P \subseteq A} .

A = {1, 2, 3, 4, 5}

B = {1, 2},

R

A = {1, 2, 3, 4}, B = {1, 2, 3, 4, 5....25}

f : A \to B

f (x) = x^{2},

f (x)

A = {1, 2, 3, 4}, B = {1, 2, 3, 4, 5....25}

f : A \to B

f (x) = x^{2},

f (x)

A = {1, 2, 3, 4, 5}

B = {1, 4, 5}

R

A

B

R

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