JEE MATHEMATICS MCQ: SET THEORY

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Let

\mathrm{A}=\{1,2\}, \mathrm{B}=\{3,4\}

. Then, number of subsets of

\mathrm{A} \times \mathrm{B}

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Correct option: D

Option D (16) is correct because the number of subsets of a set with n elements is 2^n. A x B has 4 elements.

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S

2 a_1 a_2 a_3 \ldots . . a_{2006}

a_1, a_2, a_3, \ldots ., a_{2006}

S

a N=\{a n: n \in N: b N=\{n b: n \in N\}

c N=\{c N: n \in N\}

b N \cap c N=d N

a, b, c \in N

b, c

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\}

B=\{x: x

A-B

F(n)

n

[\mathrm{F}(20) \cap \mathrm{F}(16)] \subseteq \mathrm{F}(\mathrm{y})

40 \%

A, 20 \%

10 \%

C

A

C

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A

C

2 \%

A