UPSC CSAT Mathematics Questions

30 horses were purchased for Rs. 12000. The average cost of 12 horses out of them is Rs. 250. Find the average cost of the remaining horses.

Raman’s father was 36 years of age when he was born while his mother was 32 years of age when his brother 3 years younger to him was born. What will be the aver…

If n is an even number, then the sum of the first n natural numbers is divisible by

16 years ago, Shiwani’s grandfather was 8 times as old as her. He would be 3 times of her age 8 years from now. What was the ratio of Shivani’s age to that of h…

The average of 5 consecutive natural numbers is m. If the next three natural numbers are also included, how much more than m will the average of these 8 numbers…

The average of the first 100 positive integers is

If D = ABC + BCA + CAB, where A, B and C are decimal digits, then D is divisible by

The marks of a student in English, Mathematics, Physics and Chemistry are respectively 59, 83, 75 and 43. Find his average marks.

The incomes of A and B are in the ratio 3 : 2 and their expenditures are in the ratio 5 : 3. If each saves Rs. 2500, then find the expenditure of B.

The arithmetic mean (average) of the first 10 whole numbers is

There are 21 classes in a college. The total number of students in the college is 840. Find the average number of students in each class.

The average of seven consecutive positive integers is 26. The smallest of these integers is

Raman’s present age is three times his daughter’s and nine-thirteenth of his mother’s present age. The sum of the present ages of all three of them is 125 years…

Lokesh’s father was 36 years of age when he was born while his mother was 34 years of age when his sister 3 years younger to him was born. What is the sum of ag…

Seema’s present age is four times her son’s present age and four-seventh of her father’s present age. The average of the present ages of all three of them is 32…

Ravi’s brother is 3 years elder to him. His father was 28 year of age when his sister was born, while his mother was 26 years of age when he was born. If his si…

3 years before, the average age of a family of 5 members was 17 years. Due to birth of a new child, the average age is same today. What is the present age of th…

In an examination, the average of marks was found to be 50. For deducting marks for computational errors, the marks of 100 candidates had to be changed from 90 …

The age of a man after 15 years is 4 times the age of that man 15 years before. His present age is:

The sum of the first n even numbers is