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Assignment
Course Code: OMT-101
Assignment Code: OMT-101/2015
Maximum Marks: 100
Section – A
1. a) Give two situations where you have seen Roman numerals used. (2)
b) Do you think mathematical ideas are easy to understand if they are expressed in symbols?
Give examples in support of answer. (3)
c) Give two situations in your daily life where you use mathematics. (2)
d) Find the LCM and HCF of the numbers and . (3)
2. a) Shankar bought liter milk. He distributed of the milk among his three children equally. How much milk have each child got? How much milk is left with Shankar after distribution? (3)
b) The length and breadth of a table glass are meter and meter respectively. Find the area of the table glass. Express the area as a mixed fraction. (2)
c) A car is running at a constant speed of Km/H. How much time will it take to cover Km ? Express the time taken in HH:MM:SS format. (2)
d) students of a class appeared in an examination in which students passed with first division, passed with second division and passed with third division. Find the number of students passed with first, second and third divisions in percentage. Also find the percentage of students failed in the examination? (3)
3. a) Determine which of the following expressions are the factors of the polynomial and which are not. (4)
(i) (ii) (iii) (iv)
b) Simplify the following expression:
(3)
. c) The formula for computing the nth Fibonacci number is
Using this formula compute for . (5)
d) Karim has pants and shirts. For a trip he has to select pants and shirts. In how many ways he can do this? (3)
4. a) Find the value of correct to 4 decimal places. (3)
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b) Change the following angular measurements from one system to other as indicated in
each part.
i)
to seconds ii) to degrees (2)
c) In Fig. 1, given below, classify the marked angles as acute, right or obtuse angle. (3)
d) In the circle given in Fig. 2, if is the centre of the circle, find the angles and . (2)
5. a) What is the difference between a hyperbola and a hyperboloid? Explain with examples. (2)
b) Give two English alphabets which have reflection symmetry. Also find two letters which
are not symmetric about any line. (2)
c) Copy the right angle triangle given in Fig. 3 on a stiff paper. Cut the shaded portions and
paste them along the other sides of the triangle suitably to get a motif. Using this motif
make a tessellation. (3)
(Note: Your grid should be made of the right angle triangles of the same size.)
d) Find the relation between the number of faces , number of vertices and the
number of edges of the Platonic solids. (3)
O
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A B
C
D E
F
H G
Fig. 1
Fig. 2
Fig. 3
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6. a) The scale of the road map of a city is . If the distance between the places and in the map is , find the actual distance between them. (2)
b) A sphere is put inside a cube such that the sphere touches each face of the cube from inside. If the side of the cube is cm, find the volume of the space between the sphere and the cube. (2)
c) Find the equation of the line with slope and which passes through the mid-point of the line segment joining the points and . Represent this line geometrically by taking at least three points on the line. (3)
d) Find the cost of purchasing shares of a company, each of par value ` 120 quoted
at ` 150 each in the market, from the shareholder. Also find the gain to the new shareholder if he sells each share at a premium of ` 200. (3)
7. a) Puneet purchased bananas for `150. He found of them bad and threw away. He sold of the remaining bananas at a profit of and the rest at a loss of . Find his profit or loss in percent. (4)
b) The following data represents the number of vehicles of 24 households in a colony.
Answer the following questions on the basis of the data given above.
i) What is the maximum and minimum number of vehicles in a household?
ii) Using the classes draw up the frequency distribution of the number of vehicles.
iii) How many households have vehicles more than ?
iv) How many households have vehicles between and ? (4)
c) The table shows the number of endangered and threatened species surveyed in a
year. Find the probability that
i) a randomly chosen species from the table is a reptile
ii) a randomly chosen species from the table among the endangered species is a reptile. (4)
Mammals
Reptiles
Birds
Ambiphians
Others
Endangered
60
79
19
12
150
Threatened
9
11
25
7
78
d) Identify which pairs of events and are mutually exclusive and which ones are not mutually exclusive.
i) : Getting an ace in picking one card from a deck.
: Getting a club in picking one card from a deck.
ii) : Getting an even number up on a die.
: Getting an odd number up on a die.
iii) : Getting a number between and in picking a number from the set
.
: Getting a number divisible by in picking a number from the set
(3)
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Section – B
The following 20 questions are multiple choice types. Only one of the four alternatives given in each is correct. You have to identify the correct answer. Each question is worth 1 mark. You have to give the answers in the OMR sheet attached with this and submit it along with your answers to the other
questions, for evaluation. Please read the instructions given for filling the OMR sheet, carefully before
you start filling your answers. (Please note that this is the format appearing in your Term End
Examination.)
1. Which one of the following statements is false?
1) Square of an integer is a natural number.
2) Product of two odd numbers is odd.
3) A number not divisible by 2 or 3 is a prime number.
4) Product of two rational numbers is a rational number.
2. The number is equivalent to the number:
1) 2)
3) 4)
3. A shopkeeper charges ` for eggs. If he charges ` for eggs, then the value of is
1) 2)
3) 4)
4. Which one of the following is not a solution of the equation ?
1) 2)
3) 4)
5. If the 19th term of an A.P. is and the common difference is , then its first term is
1) 2)
3) 4)
6. If , then is
1) 2)
3) 4)
7. Dimension of a tetrahedron is
1) 2)
3) 4)
8. Which one of the following is not a postulate for geometry?
1) For any two points there is exactly one line that contains them.
2) For any three non-collinear points there is exactly one plane that contains them.
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3) For every pair of parallel lines there is exactly one plane that contains them.
4) To every pair of points there is a unique positive number which is the distance between
them.
9. Sum of the angles of a heptagon is:
1) 2)
3) 4)
10. A parallelogram has
1) rotational symmetry 2) reflection symmetry
3) both rotational and reflection symmetry 4) no symmetry
11. Which one of the following is not a conic-section?
1) ellipse 2) parabola
3) hyperbola 4) square
12. The area of a rhombus is cm2. If one of the diagonal is cm long, then the length of the other diagonal is
1) cm 2) cm
3) cm 4) cm
13. Which one of the following is in the shape of a sphere?
1) An orange 2) A football
3) An apple 4) A cricket ball
14. If cubes each of side cm are joined end to end, the surface area of the cuboid so formed is
1) cm2 2) cm2
3) cm2 4) cm2
15. The area of the triangle with vertices and is
1) 2)
3) 4)
16. Let and be two points such that their abscissas are equal. Then which of the following is true?
1) The line joining and is parallel to the -axis.
2) The line joining and is parallel to the -axis.
3) The line joining and passes through the origin.
4) The line joining and makes an angle of with the -axis and cuts the -axis at
.
17. The simple interest on ` at per annum in years will be
1) ` 2) `
3) ` 4) `
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18. The mean deviation of the data is
1) 2)
3) 4)
19. The probability that a randomly chosen two-digit positive integer is a
multiple of is
1) 2)
3) 4)
20. If and are three independent events and and , then is
1) 2)
3) 4)
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INSTRUCTIONS FOR MARKING
IN THE
OMR RESPONSE SHEET
1. Use only H.B. pencil for filling the response sheet.
2. Mark your answers in the proper column.
3. Enter your Enrolment No., year, month, course code and examination code in the respective
boxes given for that as shown below. For example if your enrolment number is 071645498,
then you need to first write the enrolment number as shown in the box titled ENROLMENT
NUMBER., given below. Then you have to dark each circle corresponding to each digit
appearing in the enrolment number. Suppose, for example, the leftmost digit is 0. So we
darken the first 0 in the box. Next digit is 7. Then we select the row containing 7 and darken
the ‘7’ in the second column. Similarly you can fill the other digits.
Note that the Course Code you have to fill in the OMR sheet is the computer code for this
course which is 1114. This is different from the course code given in the programme guide
or blocks for this course.
ENROLMENT NUMBER
COURSE
CODE
YEAR
0 7 1 6 4 5 4 9 8 1 1 1 4 2 0 0 7
EXAMINATION
CENTRE CODE
MONTH
1 2 4 6 0 6
4. For filling the correct choice for the multiple choice questions, do as illustrated in the
following example.
Suppose Question 13 is as given below:
Q.No. 13.: Which one of the following is not an integer.
(1) 1 (2) 0.5
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(3) 4 (4) 0
Suppose your answer to the question is “ 4 ” which is given in option no. “3”. Then you
have to select the column against no. 13 in the boxes given below and write 3 in the box
below “13” and shade the circle numbered 3 in that as shown below. If your answer is such
that none of the 4 options are correct, then select 0.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
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OMR Response Sheet
(For writing answers to multiple choice questions)
This page is to be torn off and after filling the relevant boxes attach it along with your answers to other questions in the assignment. This is to be submitted at the study centre for evaluation.
ENROLMENT NUMBER
COURSE CODE
YEAR
EXAMINATION
CENTRE CODE
MONTH
ANSWERS TO MULTIPLE CHOICE QUESTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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