Mathematics Average MCQs with answers pdf for test preparation for all competitive exams. Average mcqs online test and Average mcqs pdf download.
A completes a work in 12 days whereas B completes the same work in 24 days. If both A and B work together, the work will be completed in ____ ?
A. 8
B. 11
C. 5
D. 17The formula is A * b / A + B
= 12 * 24 / 12 + 24
= 288 / 36
= 8If 3 persons do 3 times of a particular work in 3 days, then 7 persons can do 7 times of that work in ____ .
A. 12 days
B. 3 days
C. 7 days
D. 9 days3 persons can do 3 jobs in 3 days
1/3 of the work will take 1/3 of the time, so
3 people can do 1 job in 1 day
It will take 1 person 3 times as long, so
1 person can do 1 job in 3 days
7 persons can do 7 times the work in the same time, so
7 persons can do 7 jobs in 3 daysIf a person reads 40 pages in half an hour. After how many hours did he read 1360 pages ?
A. 6 hours
B. 17 hours
C. 16 hours
D. 18 hours30 min=40 pages
1hour = 80 pages
17×80=1360
30min = 40 pages 1 hour = 80 pages Which means he reads 80 pages in one hour dividing 1360 by 80 ye get ans 1360÷ 80= 17Sum of the age of 6 children born at the intervals of 2 years in 60 years. What is the age of the youngest child ?
A. 5
B. 7
C. 13
D. 34Second child: x + 2
Third child: x + 4
Fourth child: x + 6
Fifth child: x + 8
Sixth child: x + 10
To find the sum of their ages, we add up these values:
x + (x + 2) + (x + 4) + (x + 6) + (x + 8) + (x + 10)
Simplifying the expression:
6x + 30 = 60
Now, we can solve for x:
6x = 30
Dividing both sides of the equation by 6:
x = 5
Therefore, the age of the youngest child is 5 years old.
In a group of 26 students, 21 like football and 14 like cricket. What is the number of students who like both football and cricket ?
A. 22
B. 54
C. 17
D. 9Average of 20 numbers is zero of them at the most, how many may be greater than zero ?
A. 19
B. 12
C. 10
D. 43Age of the father is three times that of the son. The sum of ages is 48. What are their ages ?
A. 48, 44
B. 41, 67
C. 12, 36
D. 12, 441. Set up the equation
– x + 3x = 48
2. Simplify and solve the equation
– 4x = 48
– Divide both sides of the equation by 4:
– x = 12C. French
3. Calculate the ages:
– The age of the son (x) is 12 years old.
Therefore, the son is 12 years old and the father is 36 years old.If a person has 6 rupees and his friend has 4 rupees, combined they have ____rupees.
A. 3
B. 7
C. 10
D. 15– The person has 6 rupees.
– His friend has 4 rupees.
– Add these amounts together: 6 + 4 = 10 rupees.
D. 2. The combined amount of money that the person and his friend have is 10 rupees.
Therefore, when the person and his friend’s money is combined, they have 10 rupees.In a bag, if there are 5 blue balls, 6 red balls, and 11 white balls. What is the probability that if one ball is pulled out of the bag, it is white ?
A. 0.25
B. 2
C. 1
D. 0.5An object is placed 20 cm from a diverging lens. If the distance between the lens and the image is 8 cm, what is the magnification ?
A. 1/2
B. 5/2
C. 1/15
D. 2/5the magnification factor, m, is equal to i/o
“I” is the image distance from the lens
“o” is the object distance.
we have m=i/o
(8cm) / (20cm)
= 2/5.