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RELATIONS AND FUNCTIONS - EX 2.1 QUIZ

Authored by Nilesh gulati

Mathematics

11th Grade

Used 10+ times

RELATIONS AND FUNCTIONS - EX 2.1 QUIZ
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8 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Let A = {1, 2, 3} and B = {5, 7}. Then A x B =

(1, 5), (1, 7), (2, 5), (2, 7), (3, 5), (3, 7)

{(1, 5), (1, 7), (2, 5), (2, 7), (3, 5), (3, 7)}

{(1, 5), (1, 7), (2, 5), (2, 7), (3, 5)}

{(1, 2), (1, 3), (2, 1), (2, 3), (3, 1), (3, 2), (5, 7)}

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Find x and y if: (4x + 3, y) = (3x + 5, – 2)

x = 2, y = - 2

y = 2, x = - 2

x = 2, y = 2

x = - 2, y = - 2

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Let n (A) = m, and n (B) = n. Then the total number of non-empty relations that can be defined from A to B is

mnm^n

nm1n^m-1

mn1mn-1

2mn12^{mn}-1

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If A × B = {(a, x), (a, y), (b, x), (b, y)}, then A =

{a, b}

{x, y}

{a, x, b, y}

none of these

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Let A = {1, 2} and B = {3, 4}. Number of subsets will A × B have

16

4

2

none of these

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If P = {1, 2}, then P × P × P = {(1, 1, 1), (2, 2, 2), (1, 2, 2), (2, 1, 1)}

TRUE

FALSE

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

If the set A has 3 elements and the set B = {3, 4, 5}, then find the number of elements in (A × B).

6

3

9

NONE OF THESE

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