UPSC CSAT 2015 Questions

29 questions from the CSAT 2015 paper with answers and detailed solutions. Pick an option to check your answer.

Comprehension passages are not included yet.

Q1CSAT 2015Divisibility Rules

If ABC × DEED = ABCABC, where A, B, C, D and E are different digits, what are the values of D and E?

Q2CSAT 2015Geometry and Mensuration

In a plane, line X is perpendicular to line Y and parallel to line Z; line U is perpendicular to both lines V and W; line X is perpendicular to line V.

Which of following statement is correct?

Q3CSAT 2015Mixtures and AlligationsRatio and Proportion

Two equal glasses contain milk up to 1/3 and 1/4 of their capacities respectively. Both glasses are then filled with water and their contents are mixed. What is the ratio of milk to water in the mixture?

Q4CSAT 2015Number Series

What is the missing number ‘X’ of the series:
7, X, 21, 31, 43

Q5CSAT 2015Percentage

Candidates in a competitive examination consisted of 60% men and 40% women. 70% men and 75% women cleared the qualifying test and entered the final test where 80% men and 70% women were successful. Which of the following statements is correct?

Q6CSAT 2015Percentage

An automobile owner reduced his monthly petrol consumption when the prices went up. The price-consumption relationship is as follows:

Price (in Rs. per litre) 40 50 60 75
Monthly consumption (in litres) 60 48 40 32

If the price goes up to Rs. 80 per litre, his expected consumption (in litres) will be

Q7CSAT 2015Percentage

In a test, a candidate attempted only 8 questions and secured 50% marks in each of the questions. If he obtained a total of 40% in the test and all questions in the test carried equal marks, how many questions were there in the test?

Q8CSAT 2015Permutations and Combinations

Six candidates are called for interviews for one post of Principal and two posts of Vice-Principal. Only two candidates are eligible for Principal, while all six are eligible for Vice-Principal. How many possible selections are there?

Q9CSAT 2015Permutations and Combinations

There are 5 tasks and 5 persons. Task 1 cannot be assigned to persons 1 or 2. Task 2 must be assigned to either person 3 or person 4. Every person gets exactly one task. In how many ways can the assignment be made?

Q10CSAT 2015Pipes and Cisterns

Two pipes, A and B, can independently fill a tank completely in 20 minutes and 30 minutes, respectively. If both pipes are opened simultaneously, how much time will they take to fill the tank completely?

Q11CSAT 2015Time and DistanceAverage

A car travels 360 km from A to B at 40 km/h and returns from B to A at 60 km/h. Find the average speed for the complete journey.

Q12CSAT 2015Time and DistanceRatio and Proportion

In a 500 m race, B has a 45 m head start. A wins when B is still 35 m short of the finish. Find the ratio of the speeds of A and B.

Q13CSAT 2015Blood Relations

Four persons A, B, C and D consisting of two married couples are in a group. Both the women are shorter than their respective husbands. A is the tallest among the four. C is taller than B. D is B's brother. In this context, which one of the following statements is not correct?

Q14CSAT 2015Clocks

Between 6 PM and 7 PM the minute hand of a clock will be ahead of the hour hand by 3 minutes at

Q15CSAT 2015Critical ReasoningLogical Reasoning
  1. Life on other heavenly bodies is considered to be a possibility.

  2. Voyage to space is now an established fact.

What can logically be concluded regarding UFOs?

Q16CSAT 2015Cube and Dice

Each of the six different faces of a cube has been coated with a different colour i.e., V, I, B, G, Y and O. Following information is given:

1. Colours Y, O and B are on adjacent faces.

2. Colours I, G and Y are on adjacent faces.

3. Colours B, G and Y are on adjacent faces

4. Colours O, V and B are on adjacent faces

Which is the colour of the face opposite to the face coloured with O?

Q17CSAT 2015Data Interpretation

The graph depicts the earnings of A and B over the period 2000 to 2010:

 Earnings of A and B from 2000 to 2010

From the graph, which one of the following can be concluded?

Q18CSAT 2015Data Interpretation

Year-wise variation of the price of a certain commodity is shown in the following graph:

 Price of a commodity from 1980 to 2010

The price of the commodity in the year 1990:

Q19CSAT 2015Data InterpretationBar Graph

The proportion of expenditure on various items by two families A and B are represented in the following Bar Charts:

 Expenditure breakdown of Family A and Family B

From these charts, we can conclude that

Q20CSAT 2015Direction & Distance

Shahid and Rohit start from the same point in opposite directions. After each 1 km, Shahid always turns left and Rohit always turns right. Which of the following statements is correct?

Q21CSAT 2015Missing Number

Consider the following matrix:

3 8 10 2 ? 1
6 56 90 2 20 0

What is the missing number at "?" in the matrix?

Q22CSAT 2015Problems on Ages

A father is nine times as old as his son and the mother is eight times as old as the son. The sum of the father's and the mother's age is 51 years. What is the age of the son?

Q23CSAT 2015PuzzleLogical Reasoning

Consider the following statements:

  1. A man had a wife, two sons and two daughters in his family.

  2. The daughters were invited to a feast and the male members of the family went out to take part in a picnic.

  3. The man's father did not return from his work.

Which of the following statements is true?

Q24CSAT 2015Statement and ArgumentStatement and AssumptionCritical Reasoning

Statement:

Geeta says: “Naresh has become a better boxer since he started meditation.”

Radha replies: “Impossible. A boxer’s most important asset is his aggressiveness.”

Question: Radha's statement reflects her belief that:

Q25CSAT 2015Statement and ConclusionCritical Reasoning

Statement:
All good athletes want to win, and all athletes who want to win eat a well-balanced diet. Therefore, all athletes who do not eat a well-balanced diet are bad athletes.

Question: What is the best conclusion from the above statement?

Q26CSAT 2015Syllogism

Consider the following statements followed by two conclusions:

Statements: Some men are great. Some men are wise.

Conclusion I: Men are either great or wise.

Conclusion II: Some men are neither great nor wise.

Which one of the following is correct?

Q27CSAT 2015Venn Diagrams

Out of 130 students appearing in an examination, 62 failed in English, 52 failed in Mathematics, whereas 24 failed in both English and Mathematics. The number of students who passed finally is

Q28CSAT 2015Venn Diagrams

In a town, 45% population read magazine A, 55% read magazine B, 40% read magazine C, 30% read magazines A and B, 15% read magazines B and C, 25% read magazines A and C; and 10% read all the three magazines. What percentage do not read any magazine?

Q29CSAT 2015Venn Diagrams

In a group of persons travelling in a bus, 6 persons can speak Tamil, 15 can speak Hindi and 6 can speak Gujarati. In that group none can speak any other language. If 2 persons in the group can speak two languages only and one person can speak all the three languages, then how many persons are there in the group?