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