CBSE CBSE Class 10 Mathematics Class 10 Multiple Choice Questions Facebook Twitter Telegram WhatsApp MCQs of Maths Chapter 3 Pair of Linear Equations in Two Variables MCQs of Pair of Linear Equations in Two Variables MCQs Mathematics Chapter 3 Pair of Linear Equations in Two Variables Class 10 1 / 30 The solution of the linear pair px + qy = p – q and qx – py = p + q is x = 1, y = 1 x = 1, y = –1 x = –1, y = 1 x = –1, y = –1 2 / 30 Seven times a two-digit number is equal to four times the number obtained by reversing the order of its digit. If the difference between the digits is 3, then the number is 36 33 66 None of these 3 / 30 The pair of equation x = a and y = b graphically represents the lines which are Parallel lines Intersecting at (a, b) Coincident lines Intersecting at (b, a) 4 / 30 The value of c for which the pair of equation cx – y = 2 and 6x – 2y = 3 will have no solution 3 –3 –12 No value 5 / 30 If bx + ay = a^{2}+b^{2} and ax – by = 0, then the value of (x – y) a – b b – a a^{2}-b^{2} b^{2}+a^{2} 6 / 30 If one equation of a pair of dependent linear equations is –3x + 5y – 2 = 0. The second equation will be: –6x + 10y – 4 = 0 6x – 10y – 4 = 0 6x + 10y – 4 = 0 –6x + 10y + 4 = 0 7 / 30 If 2x – 3y = 7 and (a+b)x – (a+b–3)y = 4a+b represent coincident lines, then a and b satisfy the equation a + 5b = 0 5a + b = 0 a – 5b = 0 5a – b = 0 8 / 30 The father’s age is six times his son’s age. Four years hence, the age of the father will be four times his son’s age. The present ages, in years, of the son and the father are, respectively. 4 and 24 5 and 30 6 and 36 3 and 24 9 / 30 Sum of two numbers is 35 and their difference is 13, then the numbers are 24 and 12 24 and 11 12 and 11 None of these 10 / 30 If the system of equations kx – 5y = 2 and 4x + my = 10 has infinitely many solution then the value of k and m are k = 4/5 and m = –25 k = 5/4 and m = –25 k = 5/4 and m = 25 k = -5/4 and m = 25 11 / 30 The pair of equation 5x – 15y = 8 and 3x – 9y = \frac{24}{3} has Infinite solution Unique solution No solution Two solution 12 / 30 The value of k for which the system of equations x + 2y = 3 and 5x + ky + 7 = 0 has no solution is 10 6 3 1 13 / 30 Aruna has only ₹ 1 and ₹ 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is ₹ 75, then the number of ₹ 1 and ₹ 2 coins are, respectively. 35 and 15 35 and 20 15 and 35 25 and 25 14 / 30 19x – 17y = 55 and 17x – 19y = 53 then the value of (x – y) is 1/3 –3 3 5 15 / 30 The angles of cyclic quadrilaterals ABCD are: A = (6x+10)°, B = (5x)°, C = (x+y)° and D = (3y-10)°. The value of x and y is: x = 20° and y = 10° x = 20° and y = 30° x = 44° and y = 15° x = 15° and y = 15° 16 / 30 If (6, k) is a solution of equation 3x + y – 22 = 0 then the value of k is 4 –4 3 –3 17 / 30 ₹ 4900 were divided among 150 children. If each girl gets ₹ 50 and a boy gets ₹ 25, then the number of boys is: 100 102 104 105 18 / 30 A fraction becomes \frac{1}{3} when 1 is subtracted from the numerator and it becomes \frac{1}{4} when 8 is added to its denominator. The fraction obtained is: 3/12 4/12 5/12 7/12 19 / 30 8 chairs and 5 tables cost ₹ 10,500, while 5 chairs and 3 tables cost ₹ 6,450. The cost of each chair will be ₹ 750 ₹ 600 ₹ 850 ₹ 900 20 / 30 If x = a, y = b is the solution of the equations x – y = 2 and x + y = 4, then the values of a and b are, respectively. 3 and 5 5 and 3 3 and 1 –1 and –3 21 / 30 The sum of the digits of a two digit number is 9. If 27 is added to it, the digits of the numbers get reversed. The number is 36 72 63 25 22 / 30 Five years ago, A was thrice as old as B and ten years later A shall be twice as old as B, then the present age of A is 20 50 30 None of these 23 / 30 If the system of equations 3x + y = 1 and (2k–1)x + (k–1)y = 2k+1 is inconsistent, then k equals to –1 0 1 2 24 / 30 A two-digit number is 4 more than 6 times the sum of its digits. If 18 is subtracted from the number, the digits are reversed, then the number is 36 46 64 None of these 25 / 30 The pair of linear equation 3x + 5y = 3 and 6x + ky = 8 do not have a solution, if k is 5 10 15 20 26 / 30 The perimeter of a rectangular garden is 180 metres. If the length of the garden is 10 metres more than its width, what will be the area of the garden ? 40 m 50 m 50 sq m 2000 sq m 27 / 30 Two numbers are in the ratio 5:6 if 8 is subtracted from each of the numbers, the ratio becomes 4:5. The two numbers 10, 12 20, 24 30, 36 40, 48 28 / 30 If 2x + 3y = 0 and 4x – 3y = 0 then the value of (x + y) is 0 –1 1 2 29 / 30 If 2x – 3y = 7 and (a+b)x – (a+b–3)y = 4a+b have an infinite number of solutions, then a = 5, b = 1 a = –5, b = 1 a = 5, b = –1 a = –5, b = –1 30 / 30 The value of k for which the system of equation kx – y = 2, and 6x – 2y = 3 has a unique solution is Not equal to 3 Not equal to (–3) Not equal to 0 Not equal to (1) Your score isThe average score is 0% 0% Restart quiz
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