Quantitative Aptitude - Arithmetic Ability Questions

What is the value of sec 4π/3?

If tanθ = 815, then 1-sinθ1+sinθ is

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?

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

CAlculate : 72-6-45÷5-72-2×2÷2+2

If x + 1x = -2, then the value of x631 + 1x632?

D and E are the points on the sides AB and AC respectively of a ΔABC and AD = 8 cm, DB = 12 cm, AE= 6 cm and EC = 9 cm, then BC is equal to:

Which of the numbers given below is NOT rational?