Set A-x - x is a digit in the number 3591 B- x-x - N- x- 10 - Find A- B

The correct option is B B Set A={x : x is a digit in the number 3591} B={ x:x ϵ N, x lt; 10 } ⇒ A={1,3,5,9} and B={1,2,3,4,5 ...

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Byju's Answer

Standard VI

Mathematics

Idea of a Set

Set A=x : x...

Question

Set $A = {x : x$ is a digit in the number $3591}$ $B = {x : x \in N, x < 10} .$ Find $A \cup B$

A

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B

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A + B

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A - B

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Solution

The correct option is B $B$
Set $A = {x : x i s a d i g i t i n t h e n u m b e r 3591}$ $B = {x : x ϵ N, x < 10}$

$\Rightarrow$ $A = {1, 3, 5, 9}$ and $B = {1, 2, 3, 4, 5, 6, 7, 8, 9}$

Now, $A \cup B = {1, 2, 3, 4, 5, 6, 7, 8, 9} = B$

Hence, option B.

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