Let and . Let be a relation defined on by if and only if . Then the number of elements in is ....

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Let A = { 2,3,6,7} and B = { 4,5,6,8}. Let R be a relation defined on A X B by ( a_{1},b_{1} )R ( a_{2},b_{2} ) if and only if a_{1} + a_{2} = b_{1} + b_{2}. Then the number of elements in R is .: Relation (Mathematics)

Let

A = \{ 2,3,6,7\}

and

B = \{ 4,5,6,8\}

. Let

R

be a relation defined on

A \times B

\left( a_{1},b_{1} \right)R\left( a_{2},b_{2} \right)

if and only if

a_{1} + a_{2} = b_{1} + b_{2}

. Then the number of elements in

R

\

Let a relation R on N X N be defined as: ( x_{1},y_{1} )R ( x_{2},y_{2} ) if and only if x_{1} ? x_{2} or y_{1} ? y_{2}. Consider the two statements : (I) R is reflexive but not symmetric. (II) R is transitive Then which one of the following is true?

The minimum number of elements that must be added to the relation R = {(a,b),(b,c),(b,d)} on the set { a,b,c,d} so that it is an equivalence relation is

Let R be a relation on Z X Z defined by (a,b)R(c,d) if and only if ad - bc is divisible by 5 . Then R is

Let A = { 1,3,4,6,9} and B = { 2,4,5,8,10}. Let R be a relation defined on A X B such that R = {( ( a_{1},b_{1} ), ( a_{2},b_{2} )):a_{1} ? b_{2} and b_{1} ? a_{2}}. Then the number of elements in the set R is

Let Z be the set of integers. If A = { x in Z:2^{(x + 2) ( x^{2} - 5x + 6 )} = 1 } and = { x in Z : - 3 < 2x - 1 < 9}, then the . number of subsets of the set A X B is

Let Z be the set of all integers, A = { (x,y) in Z X Z:(x - 2)^{2} + y^{2} ? 4 } B = { (x,y) in Z X Z:x^{2} + y^{2} ? 4 } and C = { (x,y) in Z X Z:(x - 2)^{2} + (y - 2)^{2} ? 4 } If the total number of relations from A cap B to A cap C is 2^{p}, then the value of p is

Let A = { 1,2,3,4,...,10} and B = { 0,1,2,3,4}. The number of elements in the relation = {(a,b) in A X A : 2(a - b)^{2} + 3(a - b) in B} is .

Let A = { 0,3,4,6,7,8,9,10} and R be the relation defined on A such that R = {(x,y) in A X A:x - y is odd positive integer or x - y = 2}. The minimum number of elements that must be added to the relation R, so that it is a symmetric relation, is equal to .

Let R be the set of real numbers. end{enumerate} Statement-1: A = {(x,y) in R X R:y - x is an integer } is an equivalence . relation on R. Statement-2: B = {(x,y) in R X R:x = alpha y for some rational number } is . an equivalence relation on R.

The number of relations, on the set { 1,2,3} containing (1,2) and (2,3), which are reflexive and transitive but not symmetric, is .

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