Simplification (Railway Maths) (51 to 100)

Total Questions: 50

41. The value of √(29 4/25) is: [Group D 23/08/2022 (Afternoon)]

Correct Answer: (a) 5.4
Solution:

42. The value of √729 + √1681 + √576 - √1849 is: [Group D 23/08/2022 (Afternoon) ]

Correct Answer: (b) 49
Solution:

√729 + √1681 + √576 − √1849
= 27 + 41 + 24 − 43
= 49

43. Simplify the equation? [Group D 23/08/2022 (Evening) ]

Correct Answer: (d) 3055.75
Solution:

44. Find the value of the following: (-2/5)⁻² × (-4/5)⁴? [Group D 23/08/2022 ( Evening ) ]

Correct Answer: (c) 64/25
Solution:

45. Which of the following represents the closest approximate value that should come in place of the question mark (?) in the following equation? [Group D 23/08/2022 (Evening)]

12.999 − 3.998 + 14.002 × 3.998 + 27.008 ÷ 3.001 + 35.999 ÷ 5.998 = ?

Correct Answer: (d) 80
Solution:

46. Simplify x² + 5x − 12 − 3(x² − 2x + 9)? [Group D 23/08/2022 (Evening)]

Correct Answer: (c) −2x² + 11x − 39
Solution:

x² + 5x − 12 − 3(x² − 2x + 9)
= x² + 5x − 12 − 3x² + 6x − 27
= −2x² + 11x − 39

47. Simplify the equation? [Group D 24/08/2022 ( Morning ) ]

Correct Answer: (a) 5/18
Solution:

48. Simplify 423 × 423 − 325 × 325/ 423 - 325? [Group D 24/08/2022 (Morning) ]

Correct Answer: (a) 748
Solution:

49. Which of the following options is the closest approximate value which will come in place of question mark (?) in the following equation? [Group D 24/08/2022 (Morning) ]

68.27 - 140.1 + 9.99 x 7.7 = ?

Correct Answer: (a) 8
Solution:

68.27 − 140.1 + 9.99 × 7.7
= 68 − 140 + 10 × 8
= 68 − 140 + 80
= 8

50. The value of 12 + 12 x 12 - 12 ÷ 12 =? [Group D 24/08/2022 (Morning) ]

Correct Answer: (c) 155
Solution:

12 + 12 × 12 − 12 ÷ 12
= 12 + 144 − 1
= 155