CSAT Maths questions from IAS 2019.
A and B are two heavy steel blocks. If B is placed on the top of A, the weight increases by 60%. How much weight will reduce with respect to the total weight of A and B, if B is removed from the top of A?
A family has two children along with their parents. The average of the weights of the children and their mother is 50 kg. The average of the weights of the children and their father is 52kg. If the weight of the father is 60 kg, then what is the weight of the mother?
A printer numbers the pages of a book starting with 1 and uses 3089 digits in all. How many pages does the book have?
An 8-digit number 4252746B leaves remainder 0 when divided by 3. How many values of B are possible?
Each face of a cube can be painted in black or white colours, In how many different ways can the cube the painted?
Ena was born 4 years after her parents, marriage. Her mother is three years younger than her father and 24 years older than Ena, who is 13 years old. At what age did Ena's father get married?
How many triples (x, y, z) satisfy the equation x + y + z = 6, where x, y and z are natural numbers?
If the numerator and denominator of a proper fraction are increased by the same positive quantity which is greater than zero, the resulting fraction is
If x is greater than or equal to 25 and y is less than or equal to 40, then which one of the following is always correct?
In a conference, out of a total 100 participants, 70 are Indians. If 60 of the total participants are vegetarian, then which of the following statements is/are correct? 1. At least 30 Indian participants are vegetarian. 2. At least 10 Indian participants are non-vegetarian. Select the correct answer using the codes given below:
In a school every student is assigned a unique identification number. A student is a football player if and only if the identification number is divisible by 4, whereas a student is a cricketer if and only if the identification number is divisible by 6. If every number from 1 to 100 is assigned to a student, then how many of them play cricket as well as football?
In an examination, A has scored 20 marks more than B. If B has scored 5% less marks than A, how much has B scored?
Number 136 is added to 5 B 7 and the sum obtained is 7A3, where A and B are integers. It is given that 7A3 is exactly divisible by3. The only possible value of B is
Raju has 9000 with him and he wants to buy a mobile handset; but he finds that he has only 75% of the amount required to buy the handset. Therefore, he borrows 2000 from a friend. Then
Rakesh and Rajesh together bought 10 balls and 10 rackets. Rakesh spent `1300 and Rajesh spent `1500. If each racket costs three times a ball does, then what is the price of a racket?
Rakesh had money to buy 8 mobile handsets of a specific company. But the retailer offered very good discount on that particular handset. Rakesh could buy 10 mobile handsets with the amount he had. What was the discount the retailer offered?
Seeta and Geeta go for a swim after a gap of every 2 days and every 3 days respectively. If on 1st January both went for a swim together, when will they go together next?
Sunita cuts a sheet of paper into three pieces. Length of first piece is equal to the average of the three single digit odd prime numbers. Length of the second piece is equal to that of the first plus one-third the length of the third. The third piece is as long as the other two pieces together. The length of the original sheet of paper is
Suppose you have sufficient amount of rupee currency in three denominations: ₹1, ₹10 and ₹50. In how many different ways can you pay a bill of ₹107?
The average marks of 100 students are given to be 40. It was found later that marks of one student were 53 which were misread as 83. The corrected mean marks are
The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of four parallel lines, is
The number of times the digit 5 will appear while writing the integers from 1 to 1000 is
The ratio of a two-digit natural number to a number formed by reversing its digits is 4: 7. The number of such pairs is
When a runner was crossing the 12 km mark, she was informed that she had completed only 80% of the race. How many kilometres was the runner supposed to run in this event?