Quantitative Aptitude - Arithmetic Ability Questions

What is the value of Cot 45° + Cosec 60°?

A, B and C can finish a job working alone in 72, 24 and 36 days respectively. In how many days they can finish the job if they worked together?

∆XYZ is right angled at Y. If tanX = 15/8, then what is the value of sinZ ?

Find out the odd word/letters/number/number pair from the given alternatives.

In the following question, select the odd word from the given alternatives.

A 600 metres long train is running at the speed of 81 km/hr. If it crosses a platform in 40 seconds, then what is the length of the platform (in metres)?

Of the 3 numbers whose average is 72, the first is 2/7 times the sum of other 2. The first number is

If a2+1=9a, (a≠0) then the value of a2+1a2 is