Simplification (Railway Maths) (801 to 819)

Total Questions: 19

1. If 23 × 19 = 437. How much is 0.0437 ÷ 1.9 = ? [RRB ALP 21/08/2018 (Morning)]

Correct Answer: (a) 0.023
Solution:

2. 25 divided by 1/5 [RRB ALP 21/08/2018 (Evening)]

Correct Answer: (c) 125
Solution:

25 ÷ 1/5 = 25 × 5 = 125

3. 4 + (1/6) { (−10 × (25 − 13 − 3)) ÷ (−5) } = ? [RRB ALP 21/08/2018 (Evening)]

Correct Answer: (b) 7
Solution:

4. [63 − (−3) { −2 − 8 − 3 }] ÷ 3 { 6 + (−2)(−1) } = ? [RRB ALP 29/08/2018 (Morning)]

Correct Answer: (d) 1
Solution:

[63 - (- 3) {- 2 - 8 - 3}] ÷ 3{6 + (- 2) ( - 1)}
⇒ [63 - (- 3) × ( - 13)] ÷ 3{ 6 + 2}
⇒ [63 - 39] ÷ 24 = 24 ÷ 24 = 1

5. Select the option that can replace the question mark (?) in the following equation: [RRB ALP 29/08/2018 (Afternoon)]

2 + 5 ÷ [ 5 + 8 ÷ (1 + 1/3) − 1 ] = ?

Correct Answer: (b) 5/2
Solution:

6. 56% of 375 is: [RRB ALP 29/08/2018 (Afternoon)]

Correct Answer: (d) 210
Solution:

56% of 375 is
= 14/25 × 375 = 210

7. 58% of 350 is: [RRB ALP 29/08/2018 (Afternoon)]

Correct Answer: (b) 203
Solution:

58% of 350 = 29/50 × 350 = 203

8. 8 × {5 − (−2) × (−3)} = ? [RRB ALP 30/08/2018 (Morning)]

Correct Answer: (d) −8
Solution:

8 × { 5 – ( – 2) × ( – 3)}
= 8 × {5 - 6} ⇒ 8 × -1 = -8

9. The value of 122 + 345 − 3 ÷ 1116 × 372 is: [RRB ALP 30/08/2018 (Morning)]

Correct Answer: (d) 466
Solution:

122 + 345 - 3 ÷ 1116 × 372
⇒ 122 + 345 - 1 = 467 - 1 = 466

10. A fraction when added to 7/3 gives 4. What is the fraction? [RRB ALP 30/08/2018 (Afternoon) ]

Correct Answer: (d)
Solution: