📄 All MCQs
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The average income of one group of 6 persons is Rs. 50000 and the average of another group of 4 persons is Rs. 75000. The total income of:
A
1st group is greater than the 2nd
✓
2nd group is greater than the 1st
C
1st and 2nd groups are same
D
1st group is half of the 2nd group
💡 Explanation: Group 1 total = 6×50000 = 300000. Group 2 total = 4×75000 = 300000. Both groups have equal total income so 2nd group is greater per person but total is same - option C is correct.
Two events with equal chances of happening are called:
A
Simple events
B
Disjoint events
✓
Equally likely events
D
Equal events
💡 Explanation: Equally likely events are those that have the same probability of occurring.
A sentence having one or more unknowns is called:
A
True Sentence
B
False Sentence
✓
Open Sentence
D
Closed Sentence
💡 Explanation: An open sentence contains one or more variables (unknowns) and cannot be determined true or false without knowing the variable.
The interest equal to the product of principal rate and time is called:
✓
Simple
B
Compound
C
Continuous
D
Discrete
💡 Explanation: Simple Interest = Principal × Rate × Time (I = PRT).
The distance around a 2-dimensional closed shape is called:
A
Diameter
✓
Perimeter
C
Area
D
Surface Area
💡 Explanation: Perimeter is the total distance around the boundary of a 2-dimensional shape.
The endpoints of the diameter of a circle are A(-5 6) and B(3 -4). The centre of the circle is located at:
A
(1, -1)
✓
(-1, 1)
C
(-2, 2)
D
(2, -2)
💡 Explanation: Centre = midpoint of AB = ((-5+3)/2, (6+(-4))/2) = (-2/2, 2/2) = (-1, 1).
The sum of the ages of Saeed and his son is 60. If Saeed's age is double his son's age then Saeed's age is:
A
30
✓
40
C
45
D
33.33
💡 Explanation: Let son = x then Saeed = 2x. So x + 2x = 60 → x = 20. Saeed = 2×20 = 40.
The price of sugar is 100% more than the price of wheat. The ratio of their prices is:
A
1:2
✓
2:1
C
1:3
D
3:1
💡 Explanation: If wheat = 1 then sugar = 1 + 100% of 1 = 2. Ratio of sugar to wheat = 2:1.
In a bag the ratio of red to blue marbles is 3:2. If there are 21 red marbles then blue marbles are:
A
7
✓
14
C
21
D
28
💡 Explanation: If 3 parts = 21 then 1 part = 7. Blue marbles = 2 parts = 14.
20% of the price of a book is 120. The total price is:
✓
600
B
720
C
1200
D
480
💡 Explanation: If 20% = 120 then 100% = 120 × (100/20) = 600.
If a pizza is divided into 10 equal slices and you eat 4 slices the percentage of the pizza you did not eat is:
A
20%
B
30%
✓
60%
D
40%
💡 Explanation: You ate 4/10 = 40% so you did NOT eat 100% - 40% = 60%.
The smallest number which is divisible by all the given numbers is called:
A
Factor
B
Multiple
C
HCF
✓
LCM
💡 Explanation: LCM (Least Common Multiple) is the smallest number that is divisible by all given numbers.