RRB Group D 2018-25-10-2018-1 RRB Question Paper

RRB Group D 2018 Question Papers

RRB Group D 2018-25-10-2018-1 RRB Questions

1.
In an examination, a candidate must get 65% marks to pass. If a candidate gets 210 marks and fails by 50 marks, out of how many marks was the examination?
A.
325
B.
335
C.
400
D.
355
😑 View Answer Rough Work
ANSWER :
C. 400
2.
The mean of the 5 smallest numbers from a group is 21 while the mean of all the numbers of the group taken together is 25. If the mean of the numbers, leaving the smallest five out, is 27.5, how many numbers were there in the group in all?
A.
12
B.
13
C.
8
D.
14
😑 View Answer Rough Work
ANSWER :
B. 13
3.
In a mixture of 50 liters, milk and water are in the ratio 3 ∶ 2. How much of water should be added to make ratio equal?
A.
20 liters
B.
14 liters
C.
10 liters
D.
15 liters
😑 View Answer Rough Work
ANSWER :
C. 10 liters
4.

Simplify the following expression∶
\(\left(\frac{2}{3}\times\frac{1}{6}\right)+\left(\frac{2}{3}\times\frac{7}{2}\right)-\left(\frac{13}{4}\times\frac{4}{3}\right)\)=?

A.

\(\frac{14}{3}\)

B.

\(\frac{-17}{9}\)

C.

\(\frac{29}{3}\)

D.

\(\frac{23}{9}\)

😑 View Answer Rough Work
ANSWER :

B. \(\frac{-17}{9}\)

5.
Two pipes A and B can fill an empty cistern in 4.8 and 7.2 hours, respectively. Pipe C can drain the entire cistern in 9.6 hours when no other pipe is in operation. Initially when the cistern was empty, Pipe A and Pipe C were turned on. After a few hours, Pipe A was turned off and Pipe B was turned on instantly. In all it took 16.8 hours to fill the cistern. For how many hours was Pipe B turned on?
A.
11.55
B.
12.6
C.
10.5
D.
10.8
😑 View Answer Rough Work
ANSWER :
D. 10.8
6.
If Seeta walks from her home to school at a speed of 4 km/h she is late by 9 min. If she walks at a speed of 6 km/h, she reaches the school 6 min early. What is the distance between her school and her home?
A.
4 km
B.
7 km
C.
6 km
D.
3 km
😑 View Answer Rough Work
ANSWER :
D. 3 km
7.
Given HCF of (16, 100) = 4, what is the LCM of (6, 100)?
A.
400
B.
398
C.
440
D.
300
😑 View Answer Rough Work
ANSWER :
D. 300
8.
How much would one need to add to the difference of 5.42 and 3.56 to get 10?
A.
8.14
B.
6.44
C.
1.02
D.
4.58
😑 View Answer Rough Work
ANSWER :
A. 8.14
9.

In the diagram above, TU∥PS and points Q and R lie on PS. Also, ∠PQT = x°, ∠RQT = (x – 60)°, and ∠TUR = (x + 50)°. What is the measure of ∠URS?

A.

170°

B.

175°

C.

160°

D.

165°

😑 View Answer Rough Work
ANSWER :

A. 170°

10.

If x + y = 3, xy = 2, find the value of x3– y3

A.

13

B.

11

C.

5

D.

7

😑 View Answer Rough Work
ANSWER :

D. 7