ICSE Class 10 Maths: Predicted Paper 2

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Questions and Answers

The quadratic equation $2x^2 - 5x + 3 = 0$ is given. What are its solutions?

  • x = -1, x = -3/2
  • x = -1, x = 3/2
  • x = 1, x = 3/2 (correct)
  • x = 1, x = -3/2

Given that the point (3, k) lies on the line $2x - 3y = 5$, what is the value of k?

  • -3
  • -1/3
  • 1/3 (correct)
  • 3

In a geometric progression, the first term is 5 and the common ratio is 2. What is the 5th term?

  • 40
  • 80 (correct)
  • 320
  • 160

A sum of ₹5000 is invested at a compound interest rate of 10% per annum. What is the amount after 2 years?

<p>₹6050 (D)</p> Signup and view all the answers

Given $\sin \theta = \frac{3}{5}$, and knowing that $\theta$ is in the first quadrant, what is the value of $\cos \theta$?

<p>4/5 (D)</p> Signup and view all the answers

Solve for x: $\log(x - 1) + \log(x + 1) = \log 6$.

<p>x = $\sqrt{7}$ (D)</p> Signup and view all the answers

What is the equation of the line passing through the points (2, 3) and (4, 7)?

<p>y = 2x - 1 (A)</p> Signup and view all the answers

In triangle ABC, if angle A = 45°, angle B = 60°, and side a = 10 cm, what is the length of side b (to the nearest tenth)?

<p>12.2 cm (B)</p> Signup and view all the answers

A bag contains 3 red, 5 blue, and 2 green balls. If one ball is drawn at random, what is the probability that it is either red or green?

<p>1/2 (A)</p> Signup and view all the answers

A cylindrical tank has a radius of 2 meters and a height of 5 meters. Calculate its volume.

<p>$20\pi$ cubic meters (D)</p> Signup and view all the answers

Flashcards

Solving Quadratic Equation

Solution to 2x² - 5x + 3 = 0 are the values of x that satisfy the equation.

Mean Calculation

The mean of a data set is the sum of all values divided by the number of values.

Geometric Progression nth Term

The nth term of a geometric progression is given by a*r^(n-1), where a is the first term and r is the common ratio.

Compound Interest

Amount = Principal * (1 + rate/100)^time

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Logarithm Sum Rule

If logₐ(m) + logₐ(n) = logₐ(mn)

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Midpoint Formula

Coordinates of midpoint = ((x₁+x₂)/2, (y₁+y₂)/2)

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Cylinder Volume

Volume = πr²h, where r is the radius and h is the height.

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Standard Deviation

Standard deviation measures the spread of data around the mean. It is the square root of the variance.

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Parallelogram Properties

In a parallelogram, opposite sides are parallel and equal in length.

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Binomial Theorem

Binomial expansion of (a + b)ⁿ involves using binomial coefficients and powers of a and b.

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Study Notes

  • The question paper is for ICSE Class 10 Mathematics.
  • The paper is predicted question paper 2.
  • The time allowed is 2½ hours.
  • The maximum marks is 80.
  • All working, including rough work, must be clearly shown on the answer sheet.
  • The intended marks for questions are given in brackets.
  • Logarithm tables or calculators should be used for calculations, as appropriate.
  • Section A is compulsory and contains 40 marks.
  • Section B contains 40 marks, and any four questions must be attempted.

Section A, Question 1

  • Solve the quadratic equation: 2x² - 5x + 3 = 0.
  • Find the value of k if the point (3, k) lies on the line 2x - 3y = 5.
  • Calculate the mean of the data set: 12, 15, 20, 25, 30.

Section A, Question 2

  • In a geometric progression, the first term is 5, and the common ratio is 2. Find the 5th term.
  • A sum of ₹5000 is invested at a compound interest rate of 10% per annum. Calculate the amount after 2 years.
  • Prove that the diagonals of a rhombus bisect each other at right angles.

Section A, Question 3

  • If sin θ = 3/5, find the values of cos θ and tan θ.
  • Solve for x: log(x - 1) + log(x + 1) = log 6.
  • Calculate the area of a sector with a radius of 7 cm and a central angle of 60°.

Section A, Question 4

  • Find the equation of the line passing through the points (2, 3) and (4, 7).
  • Evaluate: ∫(2x + 3) dx.
  • In a triangle ABC, if angle A = 45°, angle B = 60°, and side a = 10 cm, find the length of side b.

Section B, Question 5

  • A bag contains 3 red, 5 blue, and 2 green balls. If one ball is drawn at random, the probability that it is either red or green needs to be determined.
  • Prove that the opposite angles of a cyclic quadrilateral are supplementary using the properties of circles.
  • Solve the system of equations using the substitution method: 2x + 3y = 12 and x - y = 3.

Section B, Question 6

  • Find the sum of the first 15 terms of an arithmetic progression where the first term is 7 and the common difference is 3.
  • If the coordinates of the midpoint of the line segment joining (2, -3) and (x, 5) are (4, 1), find the value of x.
  • A cylindrical tank has a radius of 2 meters and a height of 5 meters. Calculate its volume.

Section B, Question 7

  • Simplify: (x² - 9)/(x² - 6x + 9).
  • If the sum of the roots of the quadratic equation ax² + bx + c = 0 is equal to the product of the roots, show that b² = 4ac.
  • In a right-angled triangle, if the length of the hypotenuse is 13 cm and one of the legs is 5 cm, find the length of the other leg.

Section B, Question 8

  • Find the value of k for which the lines 3x + 4y = 7 and 6x + 8y = k are parallel.
  • Calculate the standard deviation of the data set: 4, 8, 6, 5, 3.
  • Prove that the sum of the angles in a triangle is 180°.

Section B, Question 9

  • If the function f(x) = 2x² - 3x + 5, find f(2).
  • Solve the inequality: 2x - 5 > 3x + 1.
  • In a parallelogram, prove that opposite sides are equal.

Section B, Question 10

  • A cone has a base radius of 3 cm and a height of 4 cm. Calculate its slant height.
  • If the arithmetic mean of two numbers is 8 and their geometric mean is 6, find the numbers.
  • Using the binomial theorem, expand (1 + x)⁵.

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