1.Set Theory
easy

यदि $A =\{x: x$ एक प्राकृत संख्या है $\},B =\{x: x$ एक सम प्राकृत संख्या है $\}$ $C =\{x: x$ एक विषम प्राकृत संख्या है $\}$ $D =\{x: x$ एक अभाज्य संख्या है $\}$ तो निम्नलिखित ज्ञात कीजिए

$B \cap D$

A

$\{ 2\} $

B

$\{ 2\} $

C

$\{ 2\} $

D

$\{ 2\} $

Solution

$A = \{ x:x$ is a natural number $\}  = \{ 1,2,3,4,5 \ldots \} $

$B = \{ x:x$ is an even natural number $\}  = \{ 2,4,6,8 \ldots \} $

$C = \{ x:x$ is an odd natural number $\}  = \{ 1,3,5,7,9 \ldots \} $

$D = \{ x:x$ is a primenumber $\}  = \{ 2,3,5,7 \ldots \}$

$B \cap D=\{2\}$

Standard 11
Mathematics

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