Data Interpretation

52 CDS Mathematics previous year questions (PYQs) from 13 papers, 2016 to 2026, with answers and worked solutions.

About this chapter

Difficulty: 8 easy · 43 moderate · 1 hard.
Most-asked subtopics: Tables (24), Pie Charts (18), Bar and Line Graphs (5).
Updated 20 September 2026.

Filter all 52 in the question bank Playbook: Data Interpretation Sit a CDS paper as a timed mock

CDS · 2026 · CDS (II) 2026 — Elementary Mathematics · Q100Moderate
#1Tables
Strategy Concept notes
Set · 4 questions
Directions for the following four (04) items : Read the following information and answer the four items that follow : Let the distribution of number of scooters of companies $X$ and $Y$ sold by 5 showrooms ( $A$ , $B$ , $C$ , $D$ and $E$ ) in a certain year be denoted by $S1$ and the distribution of number of scooters of only company $X$ sold by the five showrooms in the same year be denoted by $S2$ .
Showroom A B C D E Total number of scooters sold
$S1$ (in %) 19 21 15 33 12 6400
$S2$ (in %) 24 18 20 30 8 3000
- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q3Moderate
  #2Tables
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- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q4Moderate
  #3Tables
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- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q5Moderate
  #4Tables
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- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q6Moderate
  #5Tables
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Set · 4 questions
Directions for the following four (04) items : Read the following information and answer the four items that follow : The data shows that Indian roads are turning deadlier over the years.
Year 2014 2015 2016 2017
Number of bikers killed 40957 46070 52750 48746
Number of pedestrians killed 12330 13894 15746 20457
Number of cyclists killed 4037 3125 2585 3559
- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q7Easy
  #6Tables
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- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q8Moderate
  #7Tables
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- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q9Easy
  #8Tables
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- CDS · 2019 · CDS (I) 2019 — Elementary Mathematics · Q10Easy
  #9Tables
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#10Tables
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Set · 4 questions
For the next four (4) items, consider the following data with regard to different types (I, II, III, IV, V) of multivitamin tablets produced in a company (in lakhs) :
Year I II III IV V
2000 160 80 70 90 75
2001 200 150 85 160 100
2002 135 35 44 95 85
2003 240 95 120 80 120
2004 180 110 85 95 115
2005 210 150 100 92 110
- #11Tables
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- #12Tables
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- #13Tables
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- #14Tables
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Set · 2 questions
Direction : Consider the following data for the two (02) items that follow : The table below gives the age-wise population percentage of a city :
Age group Percentage
Below 30 years 14.00
30–34.99 29.75
35–39.99 26.25
40–44.99 0
45–49.99 18.50
50 years and above 11.50
The number of persons below the age of 40 years is 10.5 lakhs.
- CDS · 2022 · CDS (I) 2022 — Elementary Mathematics · Q91Moderate
  #15Tables
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- CDS · 2022 · CDS (I) 2022 — Elementary Mathematics · Q92Moderate
  #16Tables
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Set · 2 questions
Direction : Consider the following data for the two (02) items that follow : The expenditure (in lakhs of rupees) of a company for the years 2011 to 2017 is as under :
Year Expenditure
2011 13.8
2012 15.4
2013 10.4
2014 13.1
2015 15.8
2016 17.2
2017 19.4
- CDS · 2022 · CDS (I) 2022 — Elementary Mathematics · Q93Moderate
  #17Tables
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- CDS · 2022 · CDS (I) 2022 — Elementary Mathematics · Q94Moderate
  #18Tables
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Set · 3 questions
Consider the following for the next three (03) items that follow : Circulation figures (in thousands) of different newspapers (A, B, C, D, E) for five years are given below :
Year A B C D E
2019 20 10 15 8 20
2020 12 12 18 12 12
2021 24 14 17 14 15
2022 26 10 16 15 9
2023 22 16 14 16 11
- CDS · 2025 · CDS (I) 2025 — Elementary Mathematics · Q93Moderate
  #19Tables
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- CDS · 2025 · CDS (I) 2025 — Elementary Mathematics · Q94Moderate
  #20Tables
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- CDS · 2025 · CDS (I) 2025 — Elementary Mathematics · Q95Moderate
  #21Tables
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Set · 3 questions
Directions for the following three (03) items : Read the following information and answer the three items that follow : The following data presents count of released convicts who have served prison terms $X$ , those who have received some educational or technical training during their term $Y$ and those who were offered Company placement $Z$ respectively, from six different jails A, B, C, D, E and F, in the year 2010.
$X$ $Y$ $Z$
A 86 45 25
B 1305 903 461
C 2019 940 474
D 1166 869 416
E 954 544 254
F 1198 464 174
- CDS · 2020 · CDS (I) 2020 — Elementary Mathematics · Q38Moderate
  #22Tables
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- CDS · 2020 · CDS (I) 2020 — Elementary Mathematics · Q39Moderate
  #23Tables
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- CDS · 2020 · CDS (I) 2020 — Elementary Mathematics · Q40Moderate
  #24Tables
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CDS · 2017 · CDS (II) 2017 — Elementary Mathematics · Q94Moderate
#25Pie Charts
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CDS · 2017 · CDS (II) 2017 — Elementary Mathematics · Q96Moderate
#26Pie Charts
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CDS · 2016 · CDS (II) 2016 — Elementary Mathematics · Q93Easy
#27Pie Charts
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CDS · 2017 · CDS (I) 2017 — Elementary Mathematics · Q54Moderate
#28Pie Charts
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CDS · 2018 · CDS (I) 2018 — Elementary Mathematics · Q51Easy
#29Pie Charts
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Set · 4 questions
Consider the following for the next four (04) items that follow : The following Pie-Charts show the percentage of different categories ( $A$ , $B$ , $C$ , $D$ , $E$ and $F$ ) of employees in a company in the year 2019 and 2020. The total number of employees was 4000 in 2019 and 5000 in 2020.
- #30Pie Charts
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- #31Pie Charts
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- #32Pie Charts
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- #33Pie Charts
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Set · 2 questions
Direction : Consider the following for the two (02) items that follow : The budget allocations represented in a pie diagram under five different heads $A$ , $B$ , $C$ , $D$ and $E$ are respectively 40%, 18%, 9%, 25% and 8%. The total budget allocation is Rs. 300.4 lakhs.
- CDS · 2022 · CDS (I) 2022 — Elementary Mathematics · Q95Moderate
  #34Pie Charts
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- CDS · 2022 · CDS (I) 2022 — Elementary Mathematics · Q96Moderate
  #35Pie Charts
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Set · 3 questions
Consider the following for the next three (03) items that follow : The following Pie-Chart-I shows the people migrating to Delhi from different Indian States (P, Q and R are three different States and S is the combined group of other States) and Pie-Chart-II indicates the different age groups A, B, C and D of these migrating people for each State.
- CDS · 2024 · CDS (I) 2024 — Elementary Mathematics · Q83ModerateHas image
  #36Pie Charts
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- CDS · 2024 · CDS (I) 2024 — Elementary Mathematics · Q84ModerateHas image
  #37Pie Charts
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- CDS · 2024 · CDS (I) 2024 — Elementary Mathematics · Q85ModerateHas image
  #38Pie Charts
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Set · 3 questions
Consider the following for the next three (03) items that follow : Study the following Pie Charts : Chart-I : Number of houses : 1,20,000 Chart-II : Population : 21,00,000 Chart-III : Number of families : 3,60,000
- CDS · 2025 · CDS (I) 2025 — Elementary Mathematics · Q96ModerateHas image
  #39Pie Charts
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- CDS · 2025 · CDS (I) 2025 — Elementary Mathematics · Q97ModerateHas image
  #40Pie Charts
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- CDS · 2025 · CDS (I) 2025 — Elementary Mathematics · Q98ModerateHas image
  #41Pie Charts
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CDS · 2020 · CDS (I) 2020 — Elementary Mathematics · Q36Easy
#42Pie Charts
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CDS · 2019 · CDS (II) 2019 — Elementary Mathematics · Q67Moderate
#43Bar and Line Graphs
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Set · 4 questions
Consider the following for the next four (04) items that follow : The following Bar-Chart gives the production of cars by three different companies $X$ , $Y$ and $Z$ in different years :
- #44Bar and Line Graphs
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- #45Bar and Line Graphs
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- #46Bar and Line Graphs
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- #47Bar and Line Graphs
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Set · 3 questions
For the next five (05) items that follow : In a University there are 1200 students studying four different subjects, Mathematics, Statistics, Physics and Chemistry. 20% of the total number of students are studying Mathematics, one-fourth of the total number of students are studying Physics, 320 students are studying Statistics and remaining students are studying Chemistry. Three-fifth of the total number of students studying Chemistry are girls. 150 boys are studying Mathematics. 60% of students studying Physics are boys. 250 girls are studying Statistics.
- CDS · 2017 · CDS (II) 2017 — Elementary Mathematics · Q86Moderate
  #48Caselet Data Interpretation
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- CDS · 2017 · CDS (II) 2017 — Elementary Mathematics · Q87Moderate
  #49Caselet Data Interpretation
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- CDS · 2017 · CDS (II) 2017 — Elementary Mathematics · Q88Moderate
  #50Caselet Data Interpretation
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Showroom	A	B	C	D	E	Total number of scooters sold
$S1$ (in %)	19	21	15	33	12	6400
$S2$ (in %)	24	18	20	30	8	3000

Year	2014	2015	2016	2017
Number of bikers killed	40957	46070	52750	48746
Number of pedestrians killed	12330	13894	15746	20457
Number of cyclists killed	4037	3125	2585	3559

Year	I	II	III	IV	V
2000	160	80	70	90	75
2001	200	150	85	160	100
2002	135	35	44	95	85
2003	240	95	120	80	120
2004	180	110	85	95	115
2005	210	150	100	92	110

Age group	Percentage
Below 30 years	14.00
30–34.99	29.75
35–39.99	26.25
40–44.99	0
45–49.99	18.50
50 years and above	11.50

Year	Expenditure
2011	13.8
2012	15.4
2013	10.4
2014	13.1
2015	15.8
2016	17.2
2017	19.4

Year	A	B	C	D	E
2019	20	10	15	8	20
2020	12	12	18	12	12
2021	24	14	17	14	15
2022	26	10	16	15	9
2023	22	16	14	16	11

	$X$	$Y$	$Z$
A	86	45	25
B	1305	903	461
C	2019	940	474
D	1166	869	416
E	954	544	254
F	1198	464	174

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Data Interpretation

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