What is the power of 6 in 50!?

What is the value of (x+y)/(x-y) if x/y = 5?

 
Find the H.C.F, if the numbers are in the ratio of 4 : 5 : 6 and their L.C.M. is 2400. 

If FULFNHW is the code for CRICKET, then what is the word represented by the code EULGH?

 If 12 men or 16 women can do a work in 172 days, how long will 21 men and 15 women to do the same work? 

  In each of the following letter series, Some of the letters are missing, which are given in that order as one of the alternatives below it. Choose the correct alternative. 

 ac __ cab __ baca __ aba __ acac 

 You as a Professor have to be at college by 8.00. Assume it takes you 15 minutes to get dressed, 20 minutes to eat and 35 minutes to walk to school. What time should you get up every morning to get to school on time? 

In an election between two candidates, 75% of the voters cast their votes. Out of these, 2% of the voters were declared invalid. A candidate got 9261 votes, which were 75% of the total valid votes. The total number of voters enrolled in that election was:

In an election between two candidates, 10% of the electorate did not cast their votes. Additionally, 10% of the votes polled were found to be invalid. The successful candidate received 54% of the valid votes and won by a majority of 1,620 votes. What was the number of voters enrolled on the voter's list?

There is a leak in the bottom of a cistern. When the cistern had no leak, it was filled in 2.5 hours. It now takes half an hour longer. If the cistern is full of water, then how long would it take to empty itself if water starts leaking out at double the usual rate once the cistern is half empty?