Miscellaneous (Railway Maths)

Total Questions: 34

31. The ratio of the numbers of blue to red balls in a bag is constant. When there were 44 red balls, the number of blue balls was 36. If the number of blue balls is 54, how many red balls will be in the bag? [RRB ALP 09/08/2018 (Morning)]

Correct Answer: (c) 66
Solution:

32. Which of the following statement is sufficient to answer the question? Find the values of x, y, z from the given statements. [RRB ALP 20/08/2018 (Evening)]

Statements:
I : x + y = 12 ; x + z = 4
II : x - y = 6

Correct Answer: (b) Both I and II are sufficient
Solution:

33. In the usual set notation, A ∪ (B ∩ C) = [RRB ALP 29/08/2018 (Afternoon)]

Correct Answer: (d) (A ∪ B) ∩ (A ∪ C)
Solution:

34. When 472 pieces of plywood, each 0.23cm thick, are piled on top of each other, what would be the height of the pile in metre? [RRB ALP 29/08/2018 (Evening) ]

Correct Answer: (d) 1.0856
Solution: