List of top Quantitative Aptitude Questions

A boat goes upstream at \(\frac b2 km/hr\) and downstream at \(\frac a2 km/hr\).The speed of boat in still water in km/hr is :
(1134)n is divisible by 168. (168)m is divisible by (1134)n. Find the minimum value of n + m
A rectangle with the largest possible area is inscribed in a semi-circle. Find the ratio of the larger side to the smaller side.
Find the number of natural numbers less than (or up to) 1000 having different digits.
How many numbers of integral solutions of the equation \(2|x|(x^2+1)=5x^2 ?\)
Two boats met at a point and one of them moves towards West while one towards South. After 2 hours, distance between them is 60 km. Find the speed of the slower boat if the difference in two speeds is 6 kmph.
In a right-angled triangle Δ ABC , the altitude AB is 5 cm , and the base BC is 12 cm . P and Q are two points on BC such that the areas of ΔABP, ΔABQ , and Δ ABC are in arithmetic progression. If the area of Δ ABC is 1.5 times the area of Δ ABP , the length of PQ , in cm , is
The amount of job that Amal, Sunil and Kamal can individually do in a day, are in harmonic progression. Kamal takes twice as much time as Amal to do the same amount of job. If Amal and Sunil work for 4 days and 9 days, respectively, Kamal needs to work for 16 days to finish the remaining job. Then the number of days Sunil will take to finish the job working alone, is
 In a regular polygon, each interior angle is 120 more than each exterior angle. Find the number of diagonals of the polygon.
A motor boat goes 48 km downstream and comes back to the starting point in 16 hours. If the speed of the stream is 4 km/hr, then the speed of the motor boat in still water is:
Pipes A and B can fill a tank in 40 hours and 50 hours respectively and pipe C can empty the full tank in 60 hours. If all the pipes are opened together, how much time (in hours) will be needed to fill the tank?
10 litres of concentrated acid containing 75% of acid and rest water is mixed with X litres of diluted acid containing 40% of acid and rest water. If the final mixture contains 60% of acid then value of X is:
A boat can row upstream at 10 km/h and downstream at 18 km/h. If m is the speed of boat in still water and n is the speed of stream then m+n is:
Ravi takes 40 seconds whereas Vishnu takes 60 seconds to complete 240 metre race. By how many metres does Ravi defeat Vishnu ?
Mr. A took a loan of ₹ 300000 at 10% annual interest rate and paid ₹ 5000 as monthly instalment under flat rate system. What is the term of the loan?
In a 800 m race, A beats B by 74 m and in a 600 m race, B beats C by 50 m. By how many meters will A beat C in a race of 800 m?
Arvind went from point A to B and Surubhi from B to A. They met somewhere between continuing their journey. Arvind took 6 hours and Surubhi took 24 hours to reach the respective destinations after meeting. If Aravind traveled 54 Kmph, what is the distance AB.
Anil invests Rs. 22000 for 6 years in a certain scheme with 4% interest per annum, compounded half-yearly. Sunil invests in the same scheme for 5 years, and then reinvests the entire amount received at the end of 5 years for one year at 10% simple interest. If the amounts received by both at the end of 6 years are same, then the initial investment made by Sunil, in rupees, is
Match List - I with List - II.

List - I

List - II

(A)Mean(I)Average of given values
(B)Median(II)Mid value when data are sorted in 
ascending/descending order
(C)Mode(III)Data value that appears most number
of times
(D)Range(IV)It is the difference between the 
maximum and minimum values

Choose the correct answer from the options given below :
Standard deviation is:
The number of positive integers less than 50, having exactly two distinct factors other than 1 and itself, is
How many kilograms of sugar costing RS 45 per kg must be mixed with 27 kg of sugar costing Rs35 per kg so that there is a gain of 10% by selling the mixture at Rs46.20 per kg ?
Car sales in four consecutive months are given as 70, 68, 82, 95. Exponentially smoothing average method with a smoothing factor of 0.4 is used in forecasting. The expected no. of forecasted car sales in the next month is
In a game, the chances of wining of 'A' and 'B' is 2: 3. The chances of wining of B of at least 3 games out of 5 games played is
The required solution of $(x^2-y^2-z^2)p+2xyq = 2xz $, will be