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A can complete a work in 10 days, and B can complete the same work in 15 days. How many days will they take to complete the work together?

B. 8 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

What is the least common multiple (LCM) of 12 and 15?

A. 30
Posted in:  Numbers -  Arithmetic -  Mathematics

If a pipe can fill a tank in 8 hours and another pipe can empty it in 12 hours, how long will it take to fill the tank if both pipes are opened together?

D. 16 HOURS
Posted in:  Time & Work -  Aptitude -  Mathematics

What is the result of 7! (7 factorial)?

A. 5040
Posted in:  Numbers -  Arithmetic -  Mathematics

What is the sum of the first 10 positive integers?

B. 55
Posted in:  Numbers -  Arithmetic -  Mathematics