List of top Quantitative Aptitude Questions

21 workers can make 1500 breads in 18 days. How many workers are required to make 1000 breads in 21 days?
A bus covers the first 39 km of its journey in 45 minutes and the remaining 25 km in 35 minutes. What is the average speed of the car?
What number will come in the blank in the following number series?
13, 14, 22, 31, _____, 120, 336}
A shopkeeper marks an article at such a price that after giving a discount of \(12\frac{1}{2}%\) on the marked price, he still earns a profit of 15%. If the cost price of the article is ₹385, then the marked price (in ₹) of the article will be:
Statements:
1) Some lamps are flowers
2) Some flowers are trees
Conclusions:
I) All lamps are trees
II) All trees are flowers
If the area of a triangle with base \( x \) is equal to the area of a square with side \( x \), then the altitude of the triangle is:
A vessel contained a solution of acid and water in which water was 64%. Four litres of the solution were taken out of the vessel and the same quantity of water was added. If the resulting solution contained 30% acid, then the quantity (in litres) of the solution, in the beginning in the vessel, was:
A train travelling at a speed of 72 km/h crosses another train, having double its length and travelling in the opposite direction at a speed of 54 km/h, in 12 s. It also passes a tunnel in 40 s. What is the length (in m) of the tunnel?

The square of side 14 cm is circumscribed. Then the area of the shaded region is: 

If the standard deviation of \( x_1, x_2, x_3, \dots, x_n \) is \( k \), then what will be the standard deviation of \( \frac{10x_1 - 7}{2} \), \( \frac{10x_2 - 7}{2} \), ......., \( \frac{10x_n - 7}{2} \)?
Statements:
1) All employees are graduates
2) Some employees are ladies
Conclusions:
I) All ladies employees are graduates
II) Some ladies employees are graduates
The ratio of the incomes of A and B in 2019 was 5 : 4. The ratio of their individual incomes in 2019 and 2020 were 4 : 5 and 2 : 3, respectively. If the total income of A and B in 2020 was ₹7,05,600, then what was the income (in ₹) of B in 2020?
There are \( n \) numbers. When 50 is subtracted from each of these numbers, the sum of the numbers so obtained is -10. When 46 is subtracted from each of the original \( n \) numbers, then the sum of the numbers so obtained is 70. What is the mean of the original \( n \) numbers?
The income of A is \( \frac{2}{3} \) of B’s income and the expenditure of A is \( \frac{3}{4} \) of B’s expenditure. If one-third income of B is equal to the expenditure of A, then the ratio of savings of A and B will be:
A trader sells an article at a profit of 10%. If he had bought it for 25% less and sold for ₹20 more over the actual selling price, he would have gained 60%. What is the original cost price (in ₹) of the article?
Two cities A and B are 360 km apart. A car goes from A to B with a speed of 40 km/hr and returns to A with a speed of 60 km/hr. The average speed of the car is:
If $p, q, r$ are in A.P., $a$ is G.M. between $p$ and $q$, and $b$ is G.M. between $q$ and $r$, then $a^2, q^2, b^2$ are in:
If ‘-’ stands for addition, ‘+’ stands for subtraction, ‘$\div$’ stands for multiplication and ‘$\times$’ stands for division, then which one of the following equations is correct?

Find the missing figure to complete the series: 

The sign magnitude representation of $-1$ is:
Find the missing number in the following: \[ \beginbmatrix 2 & 3 & 1
1 & 2 & -1
? & 3 & 4 \endbmatrix \]
Find out the missing number in the following series: 6, 11, 21, ?, 56, 81
If A = 1, FAT = 27, then FAITH = ....................
The 3 arithmetic means between 3 and 19 are:
If in a certain language CARROM is coded as BZQQNL, which word will be coded as HORSE?