Quantitative Aptitude - Arithmetic Ability Questions

If sin - 4π/3 = x, then the value of x is

What is the value of sec 330°?

The income of X is 60% more than Y’s income and the income of Y is 40% more than Z’s income. X’s income is how much percentage more than Z’s income?

If a+bab=21 ,  then the value of (a-b) is

If A : B = 1 : 4 and B : C = 2 : 3, then what is A : B : C?

In an examination 65% students pass in history and 55% students pass in hindi. If 5% students failed in both the subjects, then what is the percentage of students who have passed in both the subjects?

The discount offered on a Shirt of Rs 500 and a pair of Trousers of Rs 1000 is 20% and 40% respectively. If Ajay bought 2 Shirt and 3 pair of Trousers then what was the effective discount ( in %) he recieved?

The length of the diagonal of a square is 10 cm. What is area of this square?