Free Printable CO Unit-1

1.

Which operation would you do first in this calculation?

6 x 4 + (3 - 1) =

a)

multiplication

b)

brackets

c)

addition

d)

division

2.

Which operation would you do first in the following equation?

10 - 4 ÷ 1 x 5 =

a)

Subtraction

b)

Division

c)

Multiplication

d)

Addition

3.

3² is the same as?

a)

3x2

b)

3x3

c)

3+3

d)

2x2

4.

8 x 3 - 10 =

a)

14

b)

-54

c)

20

d)

12

5.

(9 + 4) x 2 + 3

a)

29

b)

65

c)

18

6.

Calculate $13\times\left(26-18\right)$

a)

8

b)

18

c)

104

d)

320

7.

What is the full form of BODMAS?

a)

Bracket, Of, Division,Multiplication,Addition,Subtraction

b)

Bracket,On,Dividie,Mouse,Add,Sub

c)

Bent,Od,Div,Mut,Ad,Su

d)

Brac,Or,Diuy,Muit,Are,Sre

8.

Short form of Divide,Multiplication,Addition and Subtraction

a)

DMAS

b)

MASD

c)

ASMD

d)

SAMD

9.

4 x 5 - 2 + 4

a)

14

b)

16

c)

22

d)

28

10.

Solve the following sum 3 x 2 + 15 =

a)

11

b)

21

c)

31

d)

23

11.

What is a repeating decimal or decimal that terminates called ?

a)

Natural Number

b)

Irrational Number

c)

Rational Number

d)

Whole Number

12.

Which of the following is not a part of the set of rational numbers ?

a)

-42

b)

5/0

c)

0

d)

14.7

13.

Which of the following is true about irrational numbers?

a)

They are terminating decimals.

b)

They are non terminating and non-recurring decimals.

c)

They are fractions.

d)

They are natural numbers.

14.

To convert a whole number into a rational number put it over_________

a)

10

b)

0

c)

1

d)

100

15.

THE BASE OF BINARY NUMBER SYSTEM IS ________

a)

3

b)

4

c)

2

d)

6

16.

________________ NUMBER SYSTEM IS UNDERSTOOD BY THE COMPUTER SYSTEM.

a)

BINARY

b)

HEXA DECIMAL

c)

DECIMAL

d)

OCTAL

17.

L.C.M of 6&4

a)

12

b)

24

c)

6

d)

4

18.

H.C.F of 4&8

a)

1

b)

2

c)

4

d)

8

19.

H.C.F of 12 &18

a)

1

b)

6

c)

12

d)

18

20.

L.C.M of 4 &12

a)

1

b)

2

c)

4

d)

12

21.

L.C.M of 5,4

a)

1

b)

5

c)

4

d)

20

22.

H.C.F of 9 &10

a)

1

b)

2

c)

9

d)

90

23.

L.C.M of 6 & 18

a)

1

b)

6

c)

18

d)

9

24.

H.C.F of 5 & 20

a)

1

b)

5

c)

20

d)

100

25.

L.C.M of 8 & 12

a)

1

b)

8

c)

12

d)

24

26.

H.C.F of 14,21

a)

1

b)

7

c)

14

d)

21

27.

L.C.M of 6&4

a)

12

b)

24

c)

6

d)

4

28.

100 is a ____________

a)

Perfect Square

b)

Perfect Cube

c)

Both

d)

Neither

29.

81 =

a)

8, -8

b)

7, -7

c)

10, -10

d)

9, -9

30.

Find the cube root of 729:

a)

9

b)

81

c)

243

31.

Find the cube root of 125:

a)

41.67

b)

25

c)

5

32.

What is 5 cubed?

5³

a)

125

b)

25

c)

15

d)

625

33.

Which number is both a perfect square and a perfect cube?

a)

64

b)

27

c)

81

d)

16

34.

choose which is perfect square?

a)

514

b)

225

c)

908

d)

576

35.

$\sqrt{529}$

a)

43

b)

28

c)

15

d)

23

36.

a)

8

b)

9

c)

10

d)

11

37.

∛216

a)

6

b)

72

c)

108

d)

4

38.

The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is:

a)

RS. 3500

b)

RS. 3750

c)

RS. 3840

d)

RS. 3900

39.

The price of 2 sarees and 4 shirts is Rs. 1600. With the same money one can buy 1 saree and 6 shirts. If one wants to buy 12 shirts, how much shall he have to pay?

a)

Rs 1200

b)

Rs 2400

c)

Rs 4800

d)

Rs 200

40.

A batsman makes a score of 87 runs in the 17th inning and thus increases his average by 3. Find his average after 17th inning?

a)

35

b)

36

c)

39

d)

40

41.

The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4 ?

a)

76

b)

79

c)

85

d)

87

42.

What is 10% of $250

a)

$2.50

b)

$25

c)

$250

d)

$2500

43.

What number is 60%of 25?

a)

1.5

b)

15

c)

13

d)

13.6

44.

What percent of 25 is 60?

a)

24%

b)

2.4

c)

240%

d)

100%

45.

What number is 20% of 35?

a)

7

b)

5

c)

10.5

d)

.07

46.

John is having 500 marbles, 20% of his marbles are red, how many red marbles does john have ?

a)

250

b)

350

c)

100

d)

50

47.

There are 20 questions in a test and you get 75% correct.How many questions do you get right?

a)

15

b)

3

c)

12

d)

10

48.

There are 100 apples. 35 are red apples and 65 are green apples. What percentage is green apple?

a)

100%

b)

65%

c)

35%

d)

30%

49.

5% of 120 is

a)

5

b)

12

c)

6

d)

10

50.

5% of x is 30, then x is

a)

150

b)

160

c)

600

d)

60

51.

A person spend 75% of his income. His income is increased by 20% and he increased expenditure by 10%. Find the percentage increase in his savings.

a)

10%

b)

30%

c)

50%

d)

70%

52.

In an election between two candidates, 75% of the voters cast their votes, out of which 2% of the votes were declared invalid. A candidate got 9261 votes which were 75% of the total valid votes. Find the total number of votes enrolled in that election.

a)

17000

b)

17800

c)

16000

d)

16800

53.

If in a certain code, 95789 is written as EGKPT and 2436 is written as ALUR, then how will 24539 be in that code ?

a)

ALGUT

b)

ALGRT

c)

ALEUT

d)

ALGTU

54.

A man buys a fan for Rs. 1000 and sells it at a loss of 15%. What is the selling price of the fan?

a)

Rs .150

b)

Rs.300

c)

Rs.850

d)

Rs. 250

55.

A person buys a book for rs 200 and sells it for rs 225.What will be his gain percentage?

a)

10.5%

b)

12.5%

c)

12%

d)

15%

56.

A person buys a watch for ₹ 500 and sells it for ₹ 300. Find his loss percentage.

a)

20%

b)

40%

c)

10%

d)

15%

57.

By selling a cycle for Rs.4860, a student losses 19%.his cost price is ?

a)

Rs 1,500

b)

Rs 6,000

c)

Rs 8,000

d)

Rs 6,500

58.

The difference between the CP and SP of an article is Rs.240. If the profit is 20%, the selling price is

a)

Rs 1,000

b)

Rs 1,400

c)

Rs 1,500

d)

Rs 1.450

59.

0.15,0.3, ? ,1.2,2.4

a)

4.8

b)

0.6

c)

0.006

d)

0.9

60.

72,76,73,77,74, ? , 75

a)

70

b)

71

c)

78

d)

75

61.

34,45,56,67, ?

a)

78

b)

65

c)

60

d)

55

62.

4,8,10,14,16,20,?

a)

21

b)

20

c)

22

d)

16

63.

Find the next number in the series given below:

4, 14, 38, 82, 152,_

a)

176

b)

188

c)

220

d)

254

64.

Find the next letter in the series given below:

CIRCULAR, IRCULA, RCUL, _

a)

CU

b)

UC

c)

RU

d)

UL

65.

Find the next letter in the series given below:

PL, QN, RP, SR

a)

TS

b)

TT

c)

US

d)

UT

66.

Find the missing number in the series; 196, 169, 144, ___, 100, 81.

a)

111

b)

132

c)

147

d)

150

e)

121

67.

Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?

a)

7

b)

10

c)

12

d)

13

68.

Look at this series: 8, 43, 11, 41, __, 39, 17, ... What number should fill in the blank?

a)

8

b)

14

c)

43

d)

44

69.

4 5 7 10 14 ?

a)

16

b)

17

c)

18

d)

19

70.

2 6 12 20 ?

a)

25

b)

28

c)

30

d)

32

71.

3 5 7 9 11 ?

a)

13

b)

15

c)

17

d)

19

72.

2 6 12 20 30 ?

a)

40

b)

42

c)

44

d)

48

73.

5 10 17 26 37 50 ?

a)

62

b)

63

c)

64

d)

65

74.

6 15 24 33 ?

a)

40

b)

41

c)

42

d)

43

75.

The next term of the sequence 2,4,8,16 are

a)

64

b)

32

c)

16

d)

128

76.

Which number comes next?

24, 28, 32, 36, 40

a)

48

b)

44

c)

42

d)

4

77.

23, 24, …, ..., 33, 38

a)

27, 24

b)

29, 21

c)

26, 29

d)

27, 20

e)

28, 21

78.

14, 16, 19, 24, …

a)

31

b)

32

c)

30

d)

39

e)

33

79.

In certain code, MAARK is written as KRAAM. How PASSI can be written in that code?

a)

ISSAP

b)

ISSPA

c)

SSIPA

d)

ASSIP

80.

In a certain code, “CERTAIN” is coded as “XVIGZRM”, “SEQUENCE” is coded as “HVJFVMXV”, How would “REQUIRED” be coded?

a)

VJIFWTRV

b)

WVJRIFVI

c)

IVJFRIVW

d)

FJIVWVIR

81.

If in a certain code, COVET is written as FRYHW, which word would be written as SHDUO?

a)

QUAKE

b)

REPAY

c)

STINK

d)

PEARL

e)

TIEVP

82.

In a certain code, BOXER is written as AQWGQ. How VISIT is written in that code?

a)

UKRKU

b)

UKRKS

c)

WKRKU

d)

WKRKS

83.

In a code, CORNER is written as GSVRIV. How can CENTRAL be written in that code?

a)

DFOUSBM

b)

GIRXVEP

c)

CGNFJKER

d)

None of these

84.

Directions: Study the following information carefully and answer the questions given beside:

If DELHI can be coded as CCIDD, how would you code BOMBAY?

a)

AJMTVT

b)

AMJXVS

c)

MJXVSU

d)

WXYZAX

85.

In a certain code, SPRING is written as UNUFRC. How will the word MOBILE be written in that code language?

a)

KQEFPA

b)

OMDGNC

c)

OMEPPA

d)

None of these

86.

In a certain code, BELIEF is written as AFKKDI. How is SELDOM written in that code?

a)

RDKCNL

b)

RFKENM

c)

RFKFNP

d)

TFKENP

87.

In a certain code, BELIEF is written as AFKKDI. How is SELDOM written in that code?

a)

RDKCNL

b)

RFKENM

c)

RFKFNP

d)

TFKENP

88.

If in a certain code “RANGE” is coded as 12345 and “RANDOM” is coded as 123678. Then the code for the word “MANGO” would be?

a)

82357

b)

89343

c)

84629

d)

82347

e)

83274

89.

If 'light' is called 'morning', 'morning' is called 'dark', 'dark' is called 'night', 'night' is called 'sunshine' and 'sunshine' is called 'dusk', then when do we sleep?

a)

night

b)

sunshine

c)

dusk

d)

dark

90.

If 'sky' is called 'star', 'star' is called 'cloud', 'cloud' is called 'earth', 'earth' is called 'tree' and 'tree' is called 'book', then where do we live on?

a)

book

b)

sky

c)

star

d)

tree

91.

If 'room' is called 'bed', 'bed' is called 'window', 'window' is called 'flower' and 'flower' is called 'cooler', then a man sleep on ______.

a)

window

b)

bed

c)

flower

d)

cooler

92.

If ROSE is coded as 5436, CHAIR is coded as 78915, then what will be the code for SEARCH?

a)

369578

b)

369758

c)

369537

d)

697845

93.

If A = 2, M = 26, Z = 52, then BET = ?

a)

44

b)

54

c)

64

d)

72

94.

In a certain code 'MISSIONS' is written as 'MSIISNOS'. How is 'ONLINE' written in that code?

a)

OLNNIE

b)

ONILEN

c)

NOILEN

d)

NONE

95.

A is the brother of B, C is the father of D, E is the mother of B. A and D are brother. How is E related to C?

a)

Niece

b)

Wife

c)

Sister

d)

Sister-in-law

96.

A father said his son , " I was as old as you are at present at the time of your birth. " If the father age is 38 now, the son age 5 years back was

a)

14

b)

19

c)

33

d)

38

97.

Find the odd one out

a)

AC

b)

EF

c)

VX

d)

QS

98.

Follow the series

8 27 64 ?

a)

82

b)

27

c)

125

d)

343

99.

In a certain coding company, VEGETABLE is coded as BICIAXVKI and RADIUM is coded as MXJOTQ. What is GRAM coded as?

a)

CMQX

b)

CMCX

c)

CMXQ

d)

CMTQ

100.

Fill the series 17,32,19,29,21,26,23,__,__

a)

25,25

b)

20,22

c)

23,25

d)

25,22

101.

Mary bought a toy for $40 and sold it for $60. What is her percentage profit?

a)

40%

b)

50%

c)

20%

d)

60%

102.

Mike bought a video game for $50 and sold it for $40. What is his percentage loss?

a)

10%

b)

20%

c)

25%

d)

5%

103.

Which of the following is the largest number?

a)

20% of 200

b)

7% of 500

c)

1300% of 3

d)

700% of 9

104.

A’s salary increases by 20% and then decreases by 20%. What is the net percentage change in A’s salary?

a)

No change

b)

2%

c)

3%

d)

4%

105.

If an object is bought for $65 and sold for 20% profit how much was the object sold for?

a)

78

b)

68

c)

85

d)

52

106.

45 is What % of 300

a)

10

b)

15

c)

20

d)

135

107.

If 25% of a number is 75, then 45% of that number is:

a)

120

b)

125

c)

135

d)

140

108.

A fruit seller had some apples. He sells 40% apples and still has 420 apples. Originally, he had:

a)

588 apples

b)

600 apples

c)

672 apples

d)

700 apples

109.

What is the L.C.M of 15 and 25?

a)

25

b)

50

c)

15

d)

75

110.

Calculate 9 x 6 + 4 - 2

a)

62

b)

58

c)

56

d)

60

111.

A student scored 45 marks in a test. If the passing marks are 60, how many more marks does he need to pass?

a)

10

b)

25

c)

15

d)

20

112.

What is 15% of 200?

a)

20

b)

35

c)

25

d)

30

113.

Which of the following is a property of prime numbers?

a)

They are always even.

b)

They can be expressed as a product of two smaller numbers.

c)

They are divisible by 1 and themselves only.

d)

They are greater than 10.

114.

What is the square root of 144?

a)

14

b)

12

c)

16

d)

10

CO Unit-1_2

Total questions: 114

Worksheet time: 9hrs 3mins

Similar Resources on Wayground