A water tank has two holes. The 1st hole alone makes the tank empty in 3 min and 2nd hole alone makes the tank empty in 5 min. If water leaks out at a constant rate, how long in minutes does it take if both the holes together empty the tank?
The pie chart shows the results of an online survey which asked people about their favourite author. Study the diagram and answer the following questions.
Which author is the favourite of most people surveyed?
In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No Error'.
All that we admired and adored (1)/ before as great and magnificent, (2)/ are obliterated or vanished. (3)/ No error (4)