List of top Quantitative Aptitude Questions

If 40 people can complete a project in 100 days then 10 people complete the same project in
If the average of first 10 natural numbers is 5.5 and 3 is subtracted from each number then the average will be
The mean of 10 numbers is 152 then their sum is
A closed metal box measures \( 30 \ \text{cm} \times 20 \ \text{cm} \times 10 \ \text{cm} \). Thickness of the metal is 1 cm. Find the volume of metal required to make the box.
A rectangle MNOQ has $NO$ extended to point R. In $\triangle QPR$:
- $QP = \frac{2x}{3}QM$
- $\angle ORP = 45^\circ$
- $QR = 4\sqrt{17}$ cm
S and T are midpoints of sides QR and PR respectively. If $ST = 6$ units, find the area of rectangle MNOQ.
A bag contains 3 red and 5 black balls. Two balls are drawn at random. What is the probability that both are red?
The numbers $1, 2, \dots, n$ are written in natural order. Numbers in odd places are struck off to form a new sequence. This process is continued until only one number is left. If $n = 1997$, find the last remaining number.
A series in which any term is equal to the sum of the preceding two terms is called a Fibonacci series. The first two terms are given initially and determine the series. It is known that the difference of the squares of the ninth and eighth terms of a Fibonacci series is $840$. Find the 12th term of that series.
For an odd positive integer $n$ ($51 \le n \le 99$), the quantity $n^3 - n$ is always divisible by:
If the area of a circle is $154$ cm$^2$, what is its circumference?
The area of a rectangle is 48 cm$^2$, and its perimeter is 28 cm. What is the length of the rectangle?
A man has Rs. 2000 in Rs. 10 and Rs. 20 notes. He has 150 notes in total. How many Rs. 10 notes does he have?
Dealer marks goods 20% above cost and gives 10% discount. Find gain percent.
Farmer has hens and goats. Total heads = 80, total feet = 200. Find number of goats.
Difference between SI and CI (compounded annually) on Rs. 2000 for 2 years at 8% per annum.
A starts business with Rs. 5000. B joins 5 months later with Rs. 6000. After a year, profit = Rs. 34,000. Find A’s and B’s shares.
Square field has area = \( 324 \ \text{m}^2 \). Find perimeter.
If 80% of A = 20% of B and B = 5% of A, find value of x.
Employer reduces employees in ratio 8:5 and increases wages in ratio 7:9. Find change in total wage bill.
‘A’ can do a piece of work in 20 days and ‘B’ can do it in 15 days. How long will they take to finish together?
Father is 3 yr older than mother, and mother’s age is twice daughter’s age. Daughter is 20 now. Find father’s age when daughter was born.
A mixture of 40 L of alcohol and water contains 10% water. How much water should be added to this mixture so that the new mixture contains 20% water?
A person covers a certain distance at 30 km/h and returns at 40 km/h. Average speed = ?
A man rows 5 km/h in still water. Current speed = 1 km/h. It takes 3 h more upstream than downstream for same distance. Find the distance.
There are 30 boys and 40 girls in a class. Average age of boys = 10 years, average age of girls = 8 years. Find the average age of the whole class.