Quantitative Aptitude - Arithmetic Ability Questions

What is the value of Tan 60 + Cosec 60?

When a number is increased by 24, it becomes 110% of itself. What is the number?

The third proportional of two numbers 9 and 24 is

What is the fourth proportional to 72, 168 and 150?

If a2+b2+c2=83and a+b+c=15 then the value of ab+bc+ca is

A car travelling at an average speed of 72 km/hr takes 9 minutes to travel a certain distance. By how much should it increase its speed (in km/hr) to travel the same distance in 8 minutes?

Prahlad has done 1/3rd of a job in 30 days, Sarfaraz completes the rest of the job in 90 days. In how many days can they together do the job?

Manish, Mukesh and Sachin are Accountants. Mukesh can filea return in 5 hours and Sachin in 4 hours alone. All three together can do it in 2 hours. In what time (in hrs) will Manish do the work?