List of top Quantitative Aptitude Questions

If \((4x^2+\frac{1}{4x^2})=2\), then what is the value of \((8x^3+\frac{1}{8x^3})\) ?
A) +2
B) -2
C) +4
D) -4
Solve the following:-
\((88)^2 + (73)^2 = (?)^2 – (38)^2 – 859\)
A sum of Rs. 1,440 is lent out in three parts in such a way that the interests on first part at 2\(\%\) for 3 years, second part at 3\(\%\) for 4 years and third part at 4\(\%\) for 5 years are equal. Then the difference between the largest and the smallest sum is
The ratio of the ages of a husband and his wife when they got married was 6:5. 4 years and 6 years after their marriage they had their 1st and 2nd children. The sum of the present ages of the husband and wife is 6.4 times the sum of the present ages of their children. The average age of the family at present is 18.5 years. Find the ratio of the ages of the husband and wife when their second child was born.
Two identical circles intersect so that their centres, and the points at which they intersect, form a square of side 2 cm. What is the area of the portion that is common to both the circles?
Krishna has certain number of coins numbered with a series of consecutive natural numbers starting with 1. He found that the sum of squares of all the numbers on the coins is 1753 times the sum of numbers on coins. How many coins does he have?
In a box there are (x + 5) red balls, ‘x’ blue balls and (x + 1) black balls. If the probability of picking two blue balls at random is 1/35, then find the value of ‘x’.
If p, q, r and s are four positive integers such that pqrs = 1, what is the minimum value of (2 + p)(3 + q)(4 + r)(5 + s)?
What is the sum of all roots of the equation \(|x+4|^2–10|x+4|=24\)?
In each of the following questions a number series is given with one missing (?) term. The term is given as one of the alternatives among the five numbers given in the answer choic Find the term.
1, 27, 125, ? , 729, 1331
A trader marks an article 4x% above the cost. He gives a discount of (x + 3)% and gets a profit of (2x – 3)%. If he gives a discount of (2x/3)%, what would be his gain percent?
What is the number of distinct terms in the expansion of $(x + y + z )25$ ?
The average weight of a group of people increases by 2 kg when a person weighing 65 kg joins them. If the initial average weight of the group was 55 kg, find the ratio of the number of people initially in the group to the total number of people in the new group.
The total age of a group of 20 children is 160 years. If the average age of 8 of the children of the group is 12 years, find the average age of the remaining group.
A man deposits Rs.50 in a bank at the beginning of every month. If 10% simple interest is reckoned, how much money is he eligible to get at the end of 24 months?
A sum of Rs. 18,750 is left by will by a father to be divided between two sons, 12 and 14 years of age, so that when they attain maturity at 18, the amount (principal + interest) received by each at 5 per cent simple interest will be the same. Find the sum allotted at present to each son.
In the questions two columns are given. You are required to solve the equations given in the "equations" column and match them with the correct statement given about the desired equation in the "conditions" column.
Equations  Conditions
(a)2x2 – 11x + 12 = 0 (d)Product of roots is negative
(b)5x2 21x – 20 = 0(e)Product of roots is completely divisible by 6
( c)x2 – 17x + 72 = 0(f)Sum of both roots is positive
An electronic company conducts a survey of 1500 houses for their products. The survey suggested that 862 houses own TV, 783 houses has AC and 736 houses has washing machine. There were 95 houses having only TV, 136 houses having only AC and 88 houses having only washing machine. There were 398 houses having all the three equipments. What is the percentage of houses having all the three equipments to the houses having only two equipments? (Approx.)
Solve the following:-
\(312 × ? × 14 = 157843 + 56189\)
If 0 \(<\) p \(<\) I, which of the following has the least value? 
If 35% of x% of y=700% of y% of z, find the relation between ‘x’ and ‘z’.
Find the HCF of (8125-1) and (274-1).
One-seventh of a number is 48. What will 72% of that number be?
The radii of three concentric circles are in the ratio 2: 3: 4. What is the ratio of sum of areas of two inner circles to the area of the region between outermost circle and innermost circle?
What is the value of \((x^4+y^4+x^2y^2)\frac{x^2-2xy+y^2}{x^2-xy+y^2}\div(x^3-y^3)\) ?