Algebra

Multiple Choice Questions

51. In algebra, letters may stand for

  • (A) known quantities
  • (B) unknown quantities
  • (C) fixed numbers
  • (D) none of these

50. Variable means that it

  • (A) can take different values
  • (B) has a fixed value
  • (C) can take only 2 values
  • (D) can take only three values

49. In algebra, a × b means ab, but in arithmetic 3 × 5 is

  • (A) 35
  • (B) 53
  • (C) 15
  • (D) 8

48. 4a equals

  • (A) 4 + a
  • (B) 4 × a
  • (C) a × a × a × a
  • (D) 4 ÷ a

47. Which of the following is an equation?

  • (A) x + 1
  • (B) x – 1
  • (C) x – 1 = 0
  • (D) x + 1 > 0

46. Which of the following is an equation?

  • (A) x + 7
  • (B) 2y + 3 = 7
  • (C) 2p < 10
  • (D) 12x

45. The variable used in the equation 2p + 8 = 18 is

  • (A) 2
  • (B) 8  
  • (C) p
  • (D) 18

44. 8 more than three times the number x can be represented as

  • (A) 8 + x + 3
  • (B) 3x – 8
  • (C) 3x + 8
  • (D) 8x + 3

43. 7 times of y subtracted from 50 can be expressed as

  • (A) 7y – 50
  • (B) 50 – 7y
  • (C) 5 × 7 – y
  • (D) 50 × 7 – y

42. 13 subtracted from thrice of a number can be expressed as

  • (A) 3y – 13
  • (B) 13 – 3y
  • (C) 13y – 3
  • (D) 13y + 3

41. Megha’s age (in years) is 2 more than 5 times her daughter’s age can be expressed as

  • (A) 2m – 5
  • (B) 2 – 5m
  • (C) 5m – 2
  • (D) 5m + 2

40. Cost of a pencil is ₹x. Cost of a pen is six times that of a pencil. What is the cost of a pen?

  • (A) x/6
  • (B) 6x
  • (C) x + 6
  • (D) x – 2

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