Date: March 2010

**Attempt all questions form Question 1 to Question 4**

**Attempt any four questions From Question 5 to Quesation 11**

Solve the following in equation and represent the solution set on the number line.

`R - 3 < -1/2 - (2x)/3 <= 5/6, x ∈ R`

Chapter: [0.020499999999999997] Linear Inequations

Tarun bought and article for Rs. 8000 and spent Rs. 1000 for transportation. He marked the article Rs. 11,700 and sold it to a customer. If the customer had to pay 10% sales tax, find:

(1) the customer’s price

(2) Tarun’s profit percent.

Chapter: [0.013999999999999999] Gst (Goods and Services Tax)

Mr. Gupta opened a recurring deposit account in a bank. He deposited Rs. 2500 per month for two years. At the time of maturity he got Rs. 67,500. Find:

1) the total interest earned by Mr Gupta.

2) the rate of interest per annum.

Chapter: [0.013000000000000001] Banking

Given `A = [(3,-2),(-1,4)] B = [(6),(1)], C = [(-4),(5)] and D = [(2),(2)]` Find AB + 2C - 4D

Chapter: [0.0208] Matrices

Nikita invests Rs. 6000 for two years at a certain rate of interest compounded annually. At the end of the first year, it amounts to Rs. 6720. Calculate:

1) the rate of interest.

2) the amount at the end of the second year.

Chapter: [0.011000000000000001] Compound Interest

A and B are two points on the x-axis and y-axis respectively. P (2, −3) is the midpoint of AB. Find the:

(1) coordinates of A and B

(2) slope of line AB.

(3) an equation of line AB.

Chapter: [0.021] Co-ordinate Geometry Equation of a Line

Cards marked with numbers 1, 2, 3, 4… 20 are well shuffled and a card is drawn at random. What is the probability that the number on the card is:

(1) A prime number,

(2) A number divisible by 3,

(3) A perfect square?

Chapter: [0.07] Probability

Without using trigonometric tables evaluate

`(sin 35^@ cos 55^@ + cos 35^@ sin 55^@)/(cosec^2 10^@ - tan^2 80^@)`

Chapter: [0.05] Trigonometry

Use graph paper for this question) (4)

A(0, 3), B(3, −2) and O(0, 0) are the vertices of triangle ABO.

(1) Plot the triangle on a graph sheet taking 2 cm = 1 unit on both the axes.1

(2) Plot D the reflection of B in the Y-axis, and write its coordinates.

(3) Give the geometrical name of the figure ABOD.

(4) Write the equation of the line of symmetry of the figure ABOD.

Chapter: [0.034] Symmetry

When divided by x – 3 the polynomials x3 – px2 + x + 6 and 2x3 – x2 – (p + 3) x – 6 leave the same remainder. Find the value of ‘p’.

Chapter: [0.0203] Factorization

In the figure given below AB and CD are two parallel chords and O is the centre. If the radius of the circle is 15 cm, find the distance MN between the two chords of length 24 cm and 18 cm respectively.

Chapter: [0.032] Circles

The distribution given below shows the marks obtained by 25 students in an aptitude test. Find the mean, median and mode of the distribution.

Marks obtained | 5 | 6 | 7 | 8 | 9 | 10 |

No. of students | 3 | 9 | 6 | 4 | 2 | 1 |

Chapter: [0.06] Statistics

Without solving the following quadratic equation, find the value of ‘p’ for which the roots are equal.

px^{2} – 4x + 3 = 0.

Chapter: [0.0202] Quadratic Equations

Rohit borrows Rs. 86,000 from Arun for two years at 5% per annum simple interest. He immediately lends out this money to Akshay at 5% compound interest compounded annually for the same period. Calculate Rohit’s profit in the transaction at the end of two years.

Chapter: [0.011000000000000001] Compound Interest

Mrs Kapoor opened a Savings Bank Account in State Bank of India on 9^{th} January 2008. Her pass book entries for the year 2008 are given below:

Date | Particulars | Withdrawals (in Rs.) | Deposits (in Rs.) | Balance (in Rs.) |

Jan 9, 2008 | By Cash | - | 10000 | 10000 |

Feb 12, 2008 | By Cash | - | 15500 | 25500 |

April 6, 2008 | To Cheque | 3500 | - | 22000 |

April 30, 2008 | To Self | 2000 | - | 20000 |

July 16, 2008 | By Cheque | - | 6500 | 26500 |

August 4, 2008 | To Self | 5500 | - | 21000 |

August 20, 2008 | To Cheque | 1200 | - | 19800 |

Dec. 12, 2008 | By Cash | - | 1700 | 21500 |

Mrs Kapoor closes the account on 31^{st} December 2008. If the bank pays interest at 4% per annum, find the interest Mrs Kapoor receives on closing the account. Give your answer correct to the nearest rupee.

Chapter: [0.013000000000000001] Banking

A manufacturer marks an article for Rs. 5000. He sells it to a wholesaler at a discount of 25% on the marked price and the wholesaler sells it to a retailer at a discount of 15% on the marked price. The retailer sells it to a consumer at the marked price and at each stage, the VAT is 8%. Calculate the amount of VAT received by the government from:

(1) the wholesaler,

(2) the retailer.

Chapter: [0.013999999999999999] Gst (Goods and Services Tax)

In the following figure, O is the centre of the circle and AB is a tangent to it at point B. ∠BDC = 65°. Find ∠BAO.

Chapter: [0.032] Circles

A doorway is decorated as shown in the figure. There are four semi-circles. BC, the diameter of the larger semi-circle is of length 84 cm. Centres of the three equal semicircles lie on BC. ABC is an isosceles triangle with AB = AC. If BO = OC, find the area of the shaded region. (Take `pi = 22/7`)

Chapter: [0.04] Mensuration

Use ruler and compasses only for this question:

I. Construct ABC, where AB = 3.5 cm, BC = 6 cm and ABC = 60o.

II. Construct the locus of points inside the triangle which are equidistant from BA and BC.

III. Construct the locus of points inside the triangle which are equidistant from B and C.

IV. Mark the point P which is equidistant from AB, BC and also equidistant from B and C. Measure and records the length of PB.

Chapter: [0.031] Loci

The equation of a line 3x + 4y − 7 = 0. Find

1) The slope of the line.

2) The equation of a line perpendicular to the given line and passing through the intersection of the lines x – y + 2 = 0 and 3x + y – 10 = 0.

Chapter: [0.021] Co-ordinate Geometry Equation of a Line

The Mean of the following distribution is 52 and the frequency of class interval 30-40 is ‘f’. Find ‘f’.

Class Interval |
10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 |

Frequency | 5 | 3 | f | 7 | 2 | 6 | 13 |

Chapter: [0.06] Statistics

Use the Remainder Theorem to factorise the following expression:]

`2x^3 + x^2 - 13x + 6`

Chapter: [0.0203] Factorization

If x, y, z are in continued proportion, prove that `(x + y)^2/(y + z)^2 = x/z`

Chapter: [0.0204] Ratio and Proportion

From the top of a lighthouse, 100 m high the angles of depression of two ships on opposite sides of it are 48° and 36° respectively. Find the distance between the two ships to the nearest metre.

Chapter: [0.05] Trigonometry

Evaluate:

`[(4sin 30^@, 2cos 60^@),(sin 90^@, 2 cos 0^@)][(4,5),(5,4)]`

Chapter: [0.0208] Matrices

In the given figure ABC is a triangle with ∠EDB = ∠ACB. Prove that Δ ABC ~ Δ EBD. If BE = 6 cm, EC = 4 cm, BD = 5 cm. And area of Δ BED = 9 cm^{2}. Calculate the

(1) length of AB

(2) area of Δ ABC

Chapter: [0.035] Similarity

Vivek invests Rs 4500 in 8%. Rs. 10 shares at Rs. 15. He sells the shares when the price

rises to Rs. 30, and invests the proceeds in 12% Rs. 100 shares at Rs. 125. Calculate.

(1) the sale proceeds

(2) the number of Rs. 125 shares he buys.

(3) the change in his annual income from dividend.

Chapter: [0.012] Shares and Dividends

A positive number is divided into two parts such that the sum of the squares of the two parts is 20. The square of the larger part is 8 times the smaller part. Taking x as the smaller part of the two parts, find the number.

Chapter: [0.0202] Quadratic Equations

The monthly income of a group of 320 employees in a company is given below:

Monthly Income |
No. of Employees |

6000-7000 | 20 |

7000-8000 | 45 |

8000-9000 | 65 |

9000-10000 | 95 |

10000-11000 | 60 |

11000-12000 | 30 |

12000-13000 | 5 |

Draw an ogive the given distribution on a graph sheet taking 2 cm = Rs. 1000 on one axis and 2 cm = 50 employees on the other axis. From the graph determine:

(1) the median wage

(2) the number of employees whose income is below Rs. 8500.

(3) if the salary of a senior employee is above Rs. 11,500, find the number of senior employees in the company.

(4) the upper quartile.

Chapter: [0.06] Statistics

Construct a regular hexagon of side 4 cm. Construct a circle circumscribing the hexagon.

Chapter: [0.033] Constructions

A hemispherical bowl of diameter 7.2 cm is filled completely with chocolate sauce. This sauce is poured into an inverted cone of radius 4.8 cm. Find the height of the cone.

Chapter: [0.04] Mensuration

Given x = `(sqrt(a^2 + b^2) + sqrt(a^2 - b^2))/(sqrt(a^2 + b^2) - sqrt(a^2 - b^2))`

Use componendo and dividendo to prove that `b^2 = (2a^2x)/(x^3 + 1)`

Chapter: [0.0204] Ratio and Proportion

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