Maths Class 7 0 To 20

Mathematics Class 7th

1. A set can be expressed by ____ methods.

A. Two  

B. Three 

C. Four  

D. Five 

 

2. “ Set of first ten integers” is in ____ form

A. Descriptive

B. Tabular

C. Set builder

D. None of these

3. Set A = {3, 5, 6, …} is in ____ form.

A. Descriptive

B. Tabular 

C. Set builder

D. None of these

4. If A={ 1, 2, 3} B={ 3, 4, 5} than A Û B _____

A. { 1, 2, 5}

B. { 1, 2, 3, 4}

C. 1, 2, 3, 4, 5}

D. None of these

5. If A={ 1, 2, 3, 4} B ={ 3, 4, 5} than A ń B ____

A) { 1, 2, 4, 3}

B) { 1, 2, 3, 4, 5}

C) {3, 4}

D) None of these

6. If A = { 2, 3, 4, 5} B ={ 5, 6, 7, 8} than A\B ____

A. { 5}

B. { 2, 3, 4, 5, 6, 7, 8}

C. {2, 3, 4}

D. None of these

7. If A ǹ B = { } then this set is called ____ set.

A. Common

B.  Disjoint

C. Union

D. None of these

8. If A and B are sets and none of them is subset of other and there is at least one element which is common to both the this set is called _____ set.

A. Disjoint

B. Overlapping

C. Common

D. None of these

9. Union of a set and its complement is the ____ set.

A. Disjoint

B. Universal

C. Common

D. None of these

10. Intersection of a set and its complement is the _____ set.

A. Universal

B. Disjoint

C. Null

D. None of these

11. The set of all numbers of the form P/q where p and q are integers and q # 0 is called ___

A. Irrational number

B. Rational number

C. Whole number

D. None of these

12. Zero is a rational number.

A. True

B. False

13. All integers are rational numbers.

A. True

B. False

14. Rational numbers may be positive or negative:

A. True 

B. False

15. In any rational number p/q, q may be zero.

A. True

B. False

16. The additive inverse of +1 is ____

A. 1

B. 0

C. -1

D. 2

17. The additive inverse of 1/7 is ____

A. 0.42

B. 1

C. -1/7

D. 0

18. a/b × c/d = _____

A. a * d / b*c

B. A*c/ b*d

C. None of these

19. The reciprocal of 3/5 is _____

A. 5/3 

B. -5/3

C. -3/5

D. None of these

20. The reciprocal od 0/2 is ____

A. 2/0

B. -2/0

C. No reciprocal

D. None of these

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