Quantitative Aptitude - Arithmetic Ability Questions

If x + (1/x) = √13, then what is the value of x5 – (1/x5)?

For the inequation x^2–7x + 12 > 0, which one of the following is correct ?

What is the value of sin6θ + cos6θ + 3 sin2θ cos2θ –1?

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

If Giri's salary is 9/5 times of Hariprasad's and Shaukat's is 9/2 times of Hariprasad's, what is the ratio of Giri's salary to Shaukat's?

A student has to secure 35% marks to pass in a subject. If he gets 82 and fails by 23 marks. What is the maximum marks of the subject?

If a + b = 4 and ab = 3, then what is the value of a3 + b3?

If 21% of an electricity bill is discounted, Rs 1817 is still to be paid. How much was the original bill amount?