List of top Quantitative Aptitude Questions

The HCF of two numbers is 12, and their LCM is 144. If one number is 36, what is the other number?
Each of A, B, and C had some marbles. B distributed half the marbles with him among A and C in the ratio 1:3. Then C distributed half the marbles with him among A and B in the ratio 1:3. After that, A distributed half the marbles with him among B and C in the ratio 1:3. If each of them now has 64 marbles, find the difference between the number of marbles with A and C in the beginning.
A sum of money doubles in 5 years at simple interest. In how many years will it become 4 times?
The area of a rectangle is 48 cm$^2$, and its perimeter is 28 cm. What is the length of the rectangle?
A bag contains 3 red and 5 black balls. Two balls are drawn at random. What is the probability that both are red?
What is the value of $\log_2 8 + \log_3 9$?
What is the value of $2^{10}$?
If the area of a circle is $154$ cm$^2$, what is its circumference?
The lengths of the sides of a right-angled triangle are in geometric progression. What is the ratio of the sines of its acute angles?
Find the total number of ways in which one can wear three distinct rings on the five fingers of one’s right hand, given that one is allowed to wear more than one ring on a finger.
If the roots of the equation $x^2 - 6x + k = 0$ are real and their product is 8, what is the value of $k$?
‘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?
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 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.
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.
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 = ?