Simplification (Railway Maths) (351 to 400)

Total Questions: 50

41. Simplify. 1800 ÷ 10 × {45 ÷ (17 - 2)} × 2 + {-2 ( 1 + 2)} [RRB NTPC 09/01/2021 (Evening) ]

Correct Answer: (b) 1074
Solution:

42. Simplify. 8.8 + .08 + 8.88 + .808 [RRB NTPC 10/01/2021 (Morning) ]

Correct Answer: (c) 18.568
Solution:

8.8 + .08 + 8.88 + .808
= 8.800 + 0.080 + 8.880 + 0.808 = 18.568

43. Simplify. [RRB NTPC 10/01/2021 (Evening) ]

(0.3 ÷ 0.6 × 2/3) × 0.2 (0.2 × 2 ÷ 1/2 + 0.2)

Correct Answer: (c) 0.15
Solution:

44. Simplify: [RRB NTPC 10/01/2021 (Evening) ]

1/1.2.3 + 1/2.3.4 + 1/3.4.5 + 1/4.5.6

Correct Answer: (a) 7/30
Solution:

45. Find the value of 1/4 + 1/ 4 × 5 + 1/ 4 × 5 × 6 (rounded upto 2 decimals) [RRB NTPC 11/01/2021 (Morning) ]

Correct Answer: (a) 0.31
Solution:

46. Simplify. 1.1 + 1.001 + 10.01 + 11.11 [RRB NTPC 11/01/2021 (Evening) ]

Correct Answer: (a) 23.221
Solution:

1.1 + 1.001 + 10.01 + 11.11
= 23.221

47. Simplify the equation? [RRB NTPC 11/01/2021 (Evening) ]

Correct Answer: (b) 37/990
Solution:

48. Simplify the equation? [RRB NTPC 11/01/2021 (Evening) ]

Correct Answer: (d) 1/10
Solution:

49. What is the value of the following expression? [RRB NTPC 12/01/2021 (Morning) ]

394 × 394 + 2 × 394 × 106 + 106 × 106

Correct Answer: (b) 250000
Solution:

394 × 394 + 2 × 394 × 106 + 106 × 106
= (394 + 106)² = (500)² = 250000

50. Simplify the question? [RRB NTPC 12/01/2021 (Morning) ]

Correct Answer: (a)
Solution: