Two sets A and B will be disjointed if theirs:
a) Union is empty
b) Intersection is empty
c) Union is singleton
d) Intersection is singleton
Explanation: A pair of sets which does not have any common element are called disjoint sets. For example, set A={2,3} and set B={4,5} are disjoint sets.
Find the mean proportional of 3 and 27.
a) 3
b) 6
c) 9
d)24
The extent of variation between two extreme
values of data set is.
a) Average
b) Mean
c) Quartile
d) Range
Explanation: d) Range is the term that represents the extent of variation between two extreme values of a data set. It specifically refers to the difference between the maximum and minimum values in the set.
Which is equal to (-4)3 + 42?
a) -80
b) -64
c) -48
d) -24
Explanation: (-4)3 = -4 × -4 × -4 = -64
(4)2 = 4 × 4 = 16
-64 + 16 = -48
Square root of 12.25 is:
a) 1.25
b) 125
c) 3.5
d) 35
Second method:
12.25 can be written as : √1225/√100
= 35/10 = 3.5
A pair of angles formed by two
intersecting lines and on opposite side is called:
a) Supplementary
b) Adjacent
c) Complementary
d) Vertical
