RRB Group-D 11th Oct 2018-shift -1

Two pipes, A and B, can fill a tank in X minutes and 6 minutes, respectively. If both the pipes are used together, then they take 1.5 minute to fill the tank. Find the value of X.

$$551 \div 29 = 19 $$. Then $$5.51 \div 0.0019$$ = ?

Find the number of squares in the following figure.

Read the given statement(s) and conclusions carefully and select which of the conclusions logically follow(s) from the statement(s).
Statements:
I. All snakes are poisonous.
II. All poisonous are reptiles.
Conclusions:
1. All snakes are reptiles.
2. Some reptiles are poisonous.

What is the HCF of 16, 72 and 28 ?

Sazar Baheti has become the first visually impaired Indian runner to complete the historic Boston Marathon. Where does Sam hail from?

Select the option that can replace the question mark (?) in the following series.

Consider the given statements to be true even if they seem to be at variance with the commonly known facts and decide 8 which of the given conclusions logically follows from the statements.
Statements:
Some Penguins are Peacocks.
All the Peacocks are Snakes.
Conclusions:
1. Some penguins are snakes.
2. No peacock is a penguin.

Given below is a statement followed by two assumptions numbered I and II. You have to consider the statement and the following assumptions and decide which of the assumptions is implicit in the statement.
Statement:
Amit can make students understand the complex mathematical problems in a easy way.
Assumptions:
I. Amit likes Mathematics.
II. Amit can teach physics well.

A sum of ₹ 110 is in the form of ₹ 2, ₹ 1 and 50 paise coins in the ratio of 1 : 2 : 3, respectively. How many 50 paise coins are there?