Simplification (Railway Maths) (201 to 250)

Total Questions: 50

11. Using the fact that √18496 = 136, find the value of √184.96 − √1.8496. [Group D 18/09/2022 (Morning)]

Correct Answer: (a) 12.24
Solution:

√18496 = 136
Then,
√184.96 − √1.8496
= 13.6 − 1.36
= 12.24

12. The value of 60% of 28% of 250 = ______. [Group D 18/09/2022 (Afternoon)]

Correct Answer: (a) 42
Solution:

60% of 28% of 250
= (60/100) × (28/100) × 250
= 42

13. Find the value of 4⁻⁵ ÷ 4⁷ × 4⁻⁶? [Group D 18/09/2022 (Afternoon)]

Correct Answer: (a) 4⁻¹⁸
Solution:

4⁻⁵ ÷ 4⁷ × 4⁻⁶ = 4⁽⁻⁵⁻⁷⁻⁶⁾= 4⁻¹⁸

14. Find the value of [(12 ÷ 4/3) × {6 ÷ 4 × (12 − 7)/6} ÷ {4 × 6 ÷ 3}]? [Group D 18/09/2022 (Afternoon) ]

Correct Answer: (c)
Solution:

15. Simplify the question? [Group D 18/09/2022 (Afternoon) ]

Correct Answer: (d)
Solution:

16. The value of 2405 ÷ 13 × 6 + 35 is: [Group D 18/09/2022 (Evening) ]

Correct Answer: (d) 1145
Solution:

2405 ÷ 13 × 6 + 35
= 185 × 6 + 35 = 1110 + 35 = 1145

17. Simplify the question? [Group D 18/09/2022 (Evening) ]

Correct Answer: (d) 4/15
Solution:

18. The value of 16³ − 12³ is: [Group D 18/09/2022 (Evening)]

Correct Answer: (b) 2368
Solution:

19. What is 6⁰ × 4² × 2⁻⁴ ? [Group D 18/09/2022 (Evening)]

Correct Answer: (d) 1
Solution:

6⁰ × 4² × 2⁻⁴ = 1 × 16 × 1/16 = 1

20. Evaluate 0.1 × 0.1 × 0.1 + 0.02 × 0.02 × 0.02 / 0.2 × 0.2 × 0.2 + 0.04 × 0.04 × 0.04? [Group D 18/09/2022 (Evening)]

Correct Answer: (d) 0.125
Solution: