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