List of top Quantitative Aptitude Questions

A two digit number is such that the unit digit mu tiplied by 3 is equal to three more than the sum of the digits. When the digits are reversed the resulting number is 18 less than the original number. Find the units digit of the original number.
When an integer 'n' is divided by 'k', the remainder is on When another integer 'm' is divided by 'k', the remainder is 2. What is the remainder when 'n x m' is divided by 'k'?
Five bells begin to toll together and toll respectively at intervals of 6,7,8,9 and 12 seconds. How many times, will they toll together in one hour excluding the one at the start?
An apple seller sells to the first customer half of the total number of apples that he has and one-half of an appl To the second customer he sells half of the remaining stock and one-half of an appl The same thing continues with the third and the fourth customers. He then finds that he is left with 15 apples. How many apples did he have initially?
A reduction of 20% in the price of mangoes enables a man to buy 25 mangoes more for Rs.40. Find the reduced price of the basket that contains 200 mangoes.
After a tiring day at her office, Arushri decided to soak in her tub. She turned on the Hot water tap to 75% and the Cold water tap to 25% of their capacities and returned 5 minutes before the tub should have been full. She then turned off the Hot tap and fully opened the Cold tap. If both taps have equal capacities,what is the volume of the tub (in litres)?
By which of the following numbers, \(N = 0.abccbaabccba……\) must be multiplied so that the product is an integer?
What is the sum of all roots of the equation \(|x+4|^2–10|x+4|=24\)?
In a shop, the marked price of an article is Rs.4000. The shopkeeper gives some discount on that article and earns profit of Rs.550. Find the percentage discount on that article,if its cost price is Rs.2250.
A solid metal sphere is melted and smaller spheres of equal radii are formed. 10% of the volume of the sphere is lost in the process. The smaller spheres have a radius which is \(\frac{1}{9}\text{th}\) the larger sphere. If 10 litres of paint were needed to paint the larger sphere,how many litres are needed to paint all the smaller spheres?
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.