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General

Easy

Question

If $A$ and $B$ are two sets, then $A intersection left parenthesis A union B right parenthesis$ equals

$A$
$B$
$ϕ$
None of these

The correct answer is: $A$

We have,
$A subset of A union B$
$rightwards double arrow A intersection open parentheses A union B close parentheses equals A$

Related Questions to study

Let $A equals open curly brackets 12 comma 34 close curly brackets comma$ and let $R equals left curly bracket open parentheses 22 close parentheses comma open parentheses 33 close parentheses comma open parentheses 44 close parentheses comma left parenthesis 12 right parenthesis right curly bracket$ be a relation on $A.$ Then, $R$ is

Let $A equals open curly brackets 12 comma 34 close curly brackets comma$ and let $R equals left curly bracket open parentheses 22 close parentheses comma open parentheses 33 close parentheses comma open parentheses 44 close parentheses comma left parenthesis 12 right parenthesis right curly bracket$ be a relation on $A.$ Then, $R$ is

$left curly bracket n open parentheses n plus 1 close parentheses open parentheses 2 n plus 1 close parentheses colon n element of Z right curly bracket subset of$

$left curly bracket n open parentheses n plus 1 close parentheses open parentheses 2 n plus 1 close parentheses colon n element of Z right curly bracket subset of$

Two points $P$ and $Q$ in a plane are related if $O P equals O Q comma$ where $O$ is a fixed point. This relation is

Two points $P$ and $Q$ in a plane are related if $O P equals O Q comma$ where $O$ is a fixed point. This relation is

parallel

The void relation on a set $A$ is

The void relation on a set $A$ is

If $A equals open curly brackets theta blank colon cos invisible function application theta greater than negative fraction numerator 1 over denominator 2 end fraction comma 0 less or equal than theta less or equal than pi close curly brackets$ and
$B equals open curly brackets theta blank colon sin invisible function application theta greater than fraction numerator 1 over denominator 2 end fraction comma fraction numerator pi over denominator 3 end fraction less or equal than theta less or equal than pi close curly brackets comma$ then

If $A equals open curly brackets theta blank colon cos invisible function application theta greater than negative fraction numerator 1 over denominator 2 end fraction comma 0 less or equal than theta less or equal than pi close curly brackets$ and
$B equals open curly brackets theta blank colon sin invisible function application theta greater than fraction numerator 1 over denominator 2 end fraction comma fraction numerator pi over denominator 3 end fraction less or equal than theta less or equal than pi close curly brackets comma$ then

Out of 800 boys in a school 224 played cricket, 240 played hockey and 336 played basketball. Of the total, 64 played both basketball and hockey; 80 played cricket and basketball and 40 played cricket and hockey; 24 played all the three games. The number of boys who did not play any game is

Out of 800 boys in a school 224 played cricket, 240 played hockey and 336 played basketball. Of the total, 64 played both basketball and hockey; 80 played cricket and basketball and 40 played cricket and hockey; 24 played all the three games. The number of boys who did not play any game is

parallel

If $A equals open curly brackets n colon fraction numerator n to the power of 3 end exponent plus 5 n to the power of 2 end exponent plus 2 over denominator n end fraction blank i s blank a n blank i n t e g e r blank a n d blank i t s e l f blank i s blank a n blank i n t e g e r close curly brackets comma$ then the number of elements in the set $A comma$ is

If $A equals open curly brackets n colon fraction numerator n to the power of 3 end exponent plus 5 n to the power of 2 end exponent plus 2 over denominator n end fraction blank i s blank a n blank i n t e g e r blank a n d blank i t s e l f blank i s blank a n blank i n t e g e r close curly brackets comma$ then the number of elements in the set $A comma$ is

If $A equals open curly brackets 1 comma blank 2 comma blank 3 close curly brackets comma blank B equals left curly bracket a comma blank b right curly bracket$ , then $A cross times B$ mapped $A$ to $B$ is

If $A equals open curly brackets 1 comma blank 2 comma blank 3 close curly brackets comma blank B equals left curly bracket a comma blank b right curly bracket$ , then $A cross times B$ mapped $A$ to $B$ is

Statement 1: $1 to the power of 99 end exponent plus 2 to the power of 99 end exponent plus horizontal ellipsis plus 100 to the power of 99 end exponent$ is divisible by 10100
Statement 2: $a to the power of n end exponent plus b to the power of n end exponent$ is divisible by $a plus b$ if $n$ is odd

Statement 1: $1 to the power of 99 end exponent plus 2 to the power of 99 end exponent plus horizontal ellipsis plus 100 to the power of 99 end exponent$ is divisible by 10100
Statement 2: $a to the power of n end exponent plus b to the power of n end exponent$ is divisible by $a plus b$ if $n$ is odd

parallel

Statement 1:Let $F subscript 1 end subscript open parentheses n close parentheses equals 1 plus fraction numerator 1 over denominator 2 end fraction plus fraction numerator 1 over denominator 3 end fraction plus... plus fraction numerator 1 over denominator n end fraction$ , then $not stretchy sum from r equals 1 to n of F subscript 1 end subscript open parentheses r close parentheses equals open parentheses n plus 1 close parentheses F subscript 1 end subscript open parentheses n close parentheses minus n.$
Statement 2: $fraction numerator 1 to the power of negative 1 end exponent plus 2 to the power of negative 1 end exponent plus 3 to the power of negative 1 end exponent plus... plus n to the power of negative 1 end exponent over denominator n end fraction greater than open parentheses fraction numerator 1 plus 2 plus 3 plus... plus n over denominator n end fraction close parentheses to the power of negative 1 end exponent$ or $open parentheses 1 plus fraction numerator 1 over denominator 2 end fraction plus fraction numerator 1 over denominator 3 end fraction plus plus... fraction numerator 1 over denominator n end fraction close parentheses greater than fraction numerator n to the power of 2 end exponent over denominator not stretchy sum n end fraction$ or $open parentheses 1 plus fraction numerator 1 over denominator 2 end fraction plus fraction numerator 1 over denominator 3 end fraction plus... plus fraction numerator 1 over denominator n end fraction close parentheses greater than fraction numerator 2 n over denominator left parenthesis n plus 1 right parenthesis end fraction$

Statement 1:Let $F subscript 1 end subscript open parentheses n close parentheses equals 1 plus fraction numerator 1 over denominator 2 end fraction plus fraction numerator 1 over denominator 3 end fraction plus... plus fraction numerator 1 over denominator n end fraction$ , then $not stretchy sum from r equals 1 to n of F subscript 1 end subscript open parentheses r close parentheses equals open parentheses n plus 1 close parentheses F subscript 1 end subscript open parentheses n close parentheses minus n.$
Statement 2: $fraction numerator 1 to the power of negative 1 end exponent plus 2 to the power of negative 1 end exponent plus 3 to the power of negative 1 end exponent plus... plus n to the power of negative 1 end exponent over denominator n end fraction greater than open parentheses fraction numerator 1 plus 2 plus 3 plus... plus n over denominator n end fraction close parentheses to the power of negative 1 end exponent$ or $open parentheses 1 plus fraction numerator 1 over denominator 2 end fraction plus fraction numerator 1 over denominator 3 end fraction plus plus... fraction numerator 1 over denominator n end fraction close parentheses greater than fraction numerator n to the power of 2 end exponent over denominator not stretchy sum n end fraction$ or $open parentheses 1 plus fraction numerator 1 over denominator 2 end fraction plus fraction numerator 1 over denominator 3 end fraction plus... plus fraction numerator 1 over denominator n end fraction close parentheses greater than fraction numerator 2 n over denominator left parenthesis n plus 1 right parenthesis end fraction$

Statement 1:If an infinite G.P. has 2^nd term $x$ and its sum is 4, then $x$ belongs to $left parenthesis negative 8 comma blank 1 right parenthesis$
Statement 2:Sum of an infinite G.P. is finite if for its common ratio $r comma blank 0 less than open vertical bar r close vertical bar less than 1$

Statement 1:If an infinite G.P. has 2^nd term $x$ and its sum is 4, then $x$ belongs to $left parenthesis negative 8 comma blank 1 right parenthesis$
Statement 2:Sum of an infinite G.P. is finite if for its common ratio $r comma blank 0 less than open vertical bar r close vertical bar less than 1$

Statement 1:Coefficient of $x to the power of 14 end exponent$ in $open parentheses 1 plus 2 x plus 3 x to the power of 2 end exponent plus horizontal ellipsis plus 16 x to the power of 15 end exponent close parentheses to the power of 2 end exponent$ is 560
Statement 2: $not stretchy sum from r equals 1 to n of r left parenthesis n minus r right parenthesis equals fraction numerator n left parenthesis n to the power of 2 end exponent minus 1 right parenthesis over denominator 6 end fraction$

Statement 1:Coefficient of $x to the power of 14 end exponent$ in $open parentheses 1 plus 2 x plus 3 x to the power of 2 end exponent plus horizontal ellipsis plus 16 x to the power of 15 end exponent close parentheses to the power of 2 end exponent$ is 560
Statement 2: $not stretchy sum from r equals 1 to n of r left parenthesis n minus r right parenthesis equals fraction numerator n left parenthesis n to the power of 2 end exponent minus 1 right parenthesis over denominator 6 end fraction$

parallel

Statement 1: $x equals 1111 midline horizontal ellipsis 91$ times is composite number
Statement 2:91 is composite number

Statement 1: $x equals 1111 midline horizontal ellipsis 91$ times is composite number
Statement 2:91 is composite number

Statement 1:The numbers $square root of 2 comma blank square root of 3 comma blank square root of 5$ cannot be the terms of a single A.P. with non-zero common difference
Statement 2:If $p comma blank q comma blank r left parenthesis p not equal to q right parenthesis$ are terms (not necessarily consecutive) of an A.P., then there exists a rational number $k$ such that $left parenthesis r minus q right parenthesis divided by left parenthesis q minus p right parenthesis equals k$

Statement 1:The numbers $square root of 2 comma blank square root of 3 comma blank square root of 5$ cannot be the terms of a single A.P. with non-zero common difference
Statement 2:If $p comma blank q comma blank r left parenthesis p not equal to q right parenthesis$ are terms (not necessarily consecutive) of an A.P., then there exists a rational number $k$ such that $left parenthesis r minus q right parenthesis divided by left parenthesis q minus p right parenthesis equals k$

Statement 1:3, 6, 12 are in GP, then 9, 12, 18 are in HP.
Statement 2:If middle term is added in three consecutive terms of a GP, resultant will be in HP.

Statement 1:3, 6, 12 are in GP, then 9, 12, 18 are in HP.
Statement 2:If middle term is added in three consecutive terms of a GP, resultant will be in HP.

parallel

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