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INDIAN NAVY SAILORS Numerical Ability Study Material

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Relations and Functions

True or false: if R is a relation and (x,y) Є R then it is denoted by xRy. Where x is called image of y under R.

a) TRUE
b) FALSE
c) Maybe
d) None of these

✔Answer

Correct Answer Is : FALSE

Solution Is :

If (x+1 , y-2) = (3,1) find the value of x.

a) 1.00
b) 2.00
c) 3.00
d) 4.00

✔Answer

Correct Answer Is : 2.00

Solution Is :

If (x+1 , y-2) = (3,1) find the value of y.

a) 1.00
b) 2.00
c) 3.00
d) 4.00

✔Answer

Correct Answer Is : 3.00

Solution Is :

If A X B = { (3,2) , (3,4), (5,2), (5,4)}, then find the value of A.

a) {3,2}
b) {3,4}
c) {3,5}
d) {3,6}

✔Answer

Correct Answer Is : {3,5}

Solution Is :

If A X B = { (3,2) , (3,4), (5,2), (5,4)}, then find the value of B.

a) {2,4}
b) {2,5}
c) {2,6}
d) {2,7}

✔Answer

Correct Answer Is : {2,4}

Solution Is :

Let A = { 1,2,3,4,5} and B = { 1,4,5}, let R be a relation from A to B such that (x,y) Є R if x
a) {1,2,3,4}
b) {4,5}
c) {1,4,5}
d) None of these

✔Answer

Correct Answer Is : {1,2,3,4}

Solution Is :

Let A = { 1,2,3,4,5} and B = { 1,4,5}, let R be a relation from A to B such that (x,y) Є R if x
a) {1,2,3,4}
b) {4,5}
c) {1,4,5}
d) None of these

✔Answer

Correct Answer Is : {4,5}

Solution Is :

True or false: if R is a relation and (x,y) Є R then it is denoted by xRy. Where y is called image of x under R.

a) TRUE
b) FALSE
c) Maybe
d) None of these

✔Answer

Correct Answer Is : TRUE

Solution Is :

The set of all ___________ component of the ordered pairs in a relation R is called the domain of the relation R.

a) First
b) Second
c) Third
d) Fourth

✔Answer

Correct Answer Is : First

Solution Is :

The set of all _________ component of the ordered pairs in a relation R is called the range of the relation R.

a) First
b) Second
c) Third
d) Fourth

✔Answer

Correct Answer Is : Second

Solution Is :

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INDIAN NAVY SAILORS Numerical Ability Study Material

Relations and Functions

True or false: if R is a relation and (x,y) Є R then it is denoted by xRy. Where x is called image of y under R.

Correct Answer Is : FALSE

Solution Is :

If (x+1 , y-2) = (3,1) find the value of x.

Correct Answer Is : 2.00

Solution Is :

If (x+1 , y-2) = (3,1) find the value of y.

Correct Answer Is : 3.00

Solution Is :

If A X B = { (3,2) , (3,4), (5,2), (5,4)}, then find the value of A.

Correct Answer Is : {3,5}

Solution Is :

If A X B = { (3,2) , (3,4), (5,2), (5,4)}, then find the value of B.

Correct Answer Is : {2,4}

Solution Is :

Let A = { 1,2,3,4,5} and B = { 1,4,5}, let R be a relation from A to B such that (x,y) Є R if x a) {1,2,3,4} b) {4,5} c) {1,4,5} d) None of these ✔Answer Correct Answer Is : {1,2,3,4} Solution Is :

Correct Answer Is : {1,2,3,4}

Solution Is :

Let A = { 1,2,3,4,5} and B = { 1,4,5}, let R be a relation from A to B such that (x,y) Є R if x a) {1,2,3,4} b) {4,5} c) {1,4,5} d) None of these ✔Answer Correct Answer Is : {4,5} Solution Is :

Correct Answer Is : {4,5}

Solution Is :

True or false: if R is a relation and (x,y) Є R then it is denoted by xRy. Where y is called image of x under R.

Correct Answer Is : TRUE

Solution Is :

The set of all ___________ component of the ordered pairs in a relation R is called the domain of the relation R.

Correct Answer Is : First

Solution Is :

The set of all _________ component of the ordered pairs in a relation R is called the range of the relation R.

Correct Answer Is : Second

Solution Is :

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Let A = { 1,2,3,4,5} and B = { 1,4,5}, let R be a relation from A to B such that (x,y) Є R if x
a) {1,2,3,4}
b) {4,5}
c) {1,4,5}
d) None of these

✔Answer

Correct Answer Is : {1,2,3,4}

Solution Is :

Let A = { 1,2,3,4,5} and B = { 1,4,5}, let R be a relation from A to B such that (x,y) Є R if x
a) {1,2,3,4}
b) {4,5}
c) {1,4,5}
d) None of these

✔Answer

Correct Answer Is : {4,5}

Solution Is :