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Exercise MCQ Question 1 If (x + 1) is a factor of the polynomial (2x2 + kx) then the value of k is (a) -2 (b) -3 (c) 2 (d) 3Solution 1 Correct option: (c) Let p(x) = 2x2 + kx Since (x + 1) is a factor
Read MoreExercise MCQ Question 1 Which of the following expressions is a polynomial in one variable? Solution 1 Question 2 Which of the following expressions is a polynomial? Solution 2 Question 3 Which of the following is a polynomial? Solution 3
Read MoreExercise VSAQ Question 1 What can you say about the sum of a rational number and an irrational number?Solution 1 The sum of a rational number and an irrational number is irrational. Example: 5 + is irrational. Question 2 Solve .Solution 2 Question
Read MoreExercise MCQ Question 1 The equation of the x-axis is (a) x = 0 (b) y = 0 (c) x = y (d) x + y = 0Solution 1 Correct option: (b) The equation of the x-axis is y = 0.Question 2 The equation
Read MoreExercise Ex. 18A Question 1 If the mean of 5 observation x, x + 2, x + 4, x + 6 and x + 8 is 11, find the value of x.Solution 1 Question 2 If the mean of 25 observations
Read MoreExercise Ex. 17A Question 1 Two cubes each of volume 27 cm’ are joined end to end to form a solid. Find the surface area of the resulting cuboid.Solution 1 Question 2 Solution 2 Question 3 If the total surface
Read MoreExercise Ex. 16A Question 1 Solution 1 Question 2 The circumference of a circle is 22 cm. Find the area of its quadrant.Solution 2 Question 3 What is the diameter of a circle whose area is equal to the sum
Read MoreExercise Ex. 19A Question 1 Fill in the blanks: (i) The probability of an impossible event is ……. . (ii) The probability of a sure event is ……. . (iii) For any event E, P(E) + P(not E)= …… . (iv) The probability of a
Read MoreExercise Ex. 15A Question 1 Find the area of the triangle whose base measures 24 cm and the corresponding height measures 14. 5 cm.Solution 1 Question 2 Find the area of the triangle whose sides are 42 cm, 34 cm
Read MoreExercise Ex. 13A Question 1 Prove the following identities: Solution 1 (i) LHS = RHS (ii) LHS = RHSQuestion 2 Prove the following identities: (i) (ii) (iii)Solution 2 (i) LHS = RHS (ii)
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