Simplification (Railway Maths) (01 to 50)

Total Questions: 50

21. Convert 7893/9990 to its recurring decimal form? [Group D 17/09/2022 (Afternoon) ]

Correct Answer: (b)
Solution:

22. Solve the following equation? [Group D 17/09/2022 (Evening) ]

Correct Answer: (c) 0
Solution:

23. Solve the following equation [Group D 19/09/2022 (Afternoon) ]

Correct Answer: (d) 0
Solution:

24. Find the answer of given question? [Group D 20/09/2022 (Evening) ]

Correct Answer: (a) 94
Solution:

25. What is the sum of 7xy + 5yz - 3zx, 4yz + 9zx - 4y, -3xy + 5x - 2xy? [Group D 06/10/2022 (Evening) ]

Correct Answer: (a) 5x − 4y + 2xy + 9yz + 6zx
Solution:

26. Find the product of the greatest among the numbers 0.82, 0.802, 0.85, 0.085 with the smallest among the number 0.3, 0.03, 0.203, 2.03? [NTPC CBT II Level 5 (12/06/2022) Shift 1 ]

Correct Answer: (b) 0.255
Solution:

Greatest number = 0.85
Smallest number = 0.03
Product = 0.85 × 0.03 = 0.0255

27. 0.46 × 137.5 = 63.25, What is the value of 460 × 1.375 ? [NTPC CBT II Level 2 (13/06/2022) Shift 2 ]

Correct Answer: (c) 632.5
Solution:

0.46 × 137.5 = 63.25
Again,
460 × 1.375 = 632.5

28. The value of (919 + 9.019 + 0.919 + 9.0019) is? [NTPC CBT II Level 3 (14/06/2022) Shift 1 ]

Correct Answer: (c) 937.9399
Solution:

919 + 9.019 + 0.919 + 9.0019
= 928.019 + 0.919 + 0.0019 ⇒ 937.9399

29. Find the answer of given question? [NTPC CBT II Level 2 (16/06/2022) Shift 1 ]

Correct Answer: (c)
Solution:

30. Simplify the following expression : 5.5³ − 4³/ 30.25 + 22 + 16? [NTPC CBT II Level 2 (16/06/2022) Shift 2 ]

Correct Answer: (c) 1.5
Solution: