The length, breadth and height of a hall are 144 m, 180 m and 384 m respectively. The length of the longest scale that can measure the three dimensions of the hall exactly is:

If 8, X and 50 are in continued proportion, then the value of x is

Direction: The line chart given below shows the number of labors (men and women) working in six different years. Study the data carefully and answer the following questions.

Number of Men working in 2017 is 15% more than that of 2015 while number of Women working in 2017 is 40% less than that of 2014. Find total number of labors (Men + Women) working in 2017? 

In an election between two candidates, the candidate getting 60 % of the votes polled, is elected by a majority of 14, 000 votes. The number of votes obtained by the winning candidates is 

What will come in place of the question mark (?) in each of the following series?

15     18    16   19     17    20    ?

Pipes A and B can fill a tank in 16 hours and 24 hours, respectively, and Pipe C alone can empty the full tank in x hours. All the pipes were opened together at 10:30 a.m, but C was closed at 2:30 p.m. If the tank was full at 8:30 p.m on the same day, then what is the value of x?

Study the following graph to answer these questions :
Percent profit earned by two companies A & B over the years.
Profit = Income – Expenditure

Expenditure of Company B in years 1996 and 1997 were in the ratio of 5:7 respectively. What was the respective ratio of their incomes?

If $$ x=(164)^{169}+ (333)^{337}-(727)^{726}$$ then what is the units digit of x?