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CDS Exam ELEMENTARY MATHEMATICS Study Material

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Data Interpretation

Number of students whose IQ score is 140 is

a) 0
b) 1
c) Undeterminable from given data
d) 2

✔Answer

✔Solution

Correct Answer Is : Undeterminable from given data

Solution Is : Number of students whose IQ score is 140 is undetermined as the exact figure is not given in the question.

Number of students whose IQ score is 140 is

a) 36
b) 46
c) 35
d) 29

✔Answer

✔Solution

Correct Answer Is : 35

Solution Is : Number of students whose IQ score is 100 and more is, = 16 + 13 + 4 + 2 = 20 + 15 = 35.

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

Total marks obtained by the candidates B and F together was the least in the test ,

a) 2
b) 3
c) 4
d) 5

✔Answer

✔Solution

Correct Answer Is : 5

Solution Is : Total marks obtained by B and F together in Test 1 = 70 + 62 = 132 Total marks obtained by B and F together in Test 2 = 62 + 66 = 128 Total marks obtained by B and F together in Test 3 = 68 + 68 = 136 Total marks obtained by B and F together in Test 4 = 60 + 58 = 118 Total marks obtained by B and F together in Test 5 = 58 + 59 = 117 Total marks obtained by B and F together in Test 6 = 68 + 65 = 133 Therefore , B and F got the least marks in test 5

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

Which canditates has shown a steady improvement throughout the academic year ?

a) A
b) B
c) C
d) D

✔Answer

✔Solution

Correct Answer Is : D

Solution Is : Candidate D has shown a steady improvement throughout the academic year.

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

Which candidate has shown maximum percentage improvement in Test 6 compared to Test 1 ?

a) A
b) E
c) B
d) C

✔Answer

✔Solution

Correct Answer Is : E

Solution Is : Candidate E has shown maximum percentage improvement in test 6 compared to Test 1 ie., 14.28 %

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

In which Test have all candidates performed better than in the previous test ?

a) Test 6
b) Test 5
c) Test 4
d) Test 2

✔Answer

✔Solution

Correct Answer Is : Test 6

Solution Is : In Test 6 , all candidates have performed better than previous test 5.

A person can row 7 1/2 km/h in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the strem is

a) 2 km/h
b) 3 km/h
c) 2 1/2 km/h
d) 3 1/2 km/h

✔Answer

✔Solution

Correct Answer Is : 2 1/2 km/h

Solution Is :

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.
During 1990, the percentage of decrease in prodection of maize as against the previous year was

a) 0.0263
b) 0.0256
c) 0.0271
d) 0.0247

✔Answer

✔Solution

Correct Answer Is : 0.0256

Solution Is : The required percentage quantity = 6 * 100/234 = 2.56%

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.
In 1991, the increase in prodection over the previous year was maximum for

a) Wheat
b) Rice
c) Maize
d) Other cereals

✔Answer

✔Solution

Correct Answer Is : Maize

Solution Is :

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.
Theincrease in the prodeection of the cereals (over the privious year) was minimum during the year

a) 1989
b) 1990
c) 1991
d) 1992

✔Answer

✔Solution

Correct Answer Is : 1989

Solution Is :

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CDS Exam ELEMENTARY MATHEMATICS Study Material

Data Interpretation

Number of students whose IQ score is 140 is

Correct Answer Is : Undeterminable from given data

Solution Is : Number of students whose IQ score is 140 is undetermined as the exact figure is not given in the question.

Number of students whose IQ score is 140 is

Correct Answer Is : 35

Solution Is : Number of students whose IQ score is 100 and more is, = 16 + 13 + 4 + 2 = 20 + 15 = 35.

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .Total marks obtained by the candidates B and F together was the least in the test ,

Correct Answer Is : 5

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .Which canditates has shown a steady improvement throughout the academic year ?

Correct Answer Is : D

Solution Is : Candidate D has shown a steady improvement throughout the academic year.

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .Which candidate has shown maximum percentage improvement in Test 6 compared to Test 1 ?

Correct Answer Is : E

Solution Is : Candidate E has shown maximum percentage improvement in test 6 compared to Test 1 ie., 14.28 %

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .In which Test have all candidates performed better than in the previous test ?

Correct Answer Is : Test 6

Solution Is : In Test 6 , all candidates have performed better than previous test 5.

A person can row 7 1/2 km/h in still water and he finds that it takes him twice as long to row up as to row down the river. The speed of the strem is

Correct Answer Is : 2 1/2 km/h

Solution Is :

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.During 1990, the percentage of decrease in prodection of maize as against the previous year was

Correct Answer Is : 0.0256

Solution Is : The required percentage quantity = 6 * 100/234 = 2.56%

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.In 1991, the increase in prodection over the previous year was maximum for

Correct Answer Is : Maize

Solution Is :

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.Theincrease in the prodeection of the cereals (over the privious year) was minimum during the year

Correct Answer Is : 1989

Solution Is :

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Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

Total marks obtained by the candidates B and F together was the least in the test ,

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

Which canditates has shown a steady improvement throughout the academic year ?

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

Which candidate has shown maximum percentage improvement in Test 6 compared to Test 1 ?

Study the folllowing table showing marks obtained by 6 candidates ( A , B , C , D , E and F ) in 6 tests conducted in one academic year and answer the question given below .

In which Test have all candidates performed better than in the previous test ?

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.
During 1990, the percentage of decrease in prodection of maize as against the previous year was

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.
In 1991, the increase in prodection over the previous year was maximum for

The following tables shows the prodection of food grains (in millian tonnes) in a State for the period 1988 10 1992. Read the table and answer the qustions.
Theincrease in the prodeection of the cereals (over the privious year) was minimum during the year