Quantitative Aptitude - Arithmetic Ability Questions

A solid cone of height 24 cm and radius of its base 8 cm is melted to form a solid cylinder of radius 6 cm and height 6 cm. In the whole process what
percent of material is wasted?

30% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

If the product of two numbers is 2400 and their LCM is 96 then their HCF is

In the following question, select the odd number pair from the given alternatives.

Rajesh buys a table of Rs 900 and sells it. Rajesh gives two successive discount of 10% and 20% to the customer. What will be the selling price (in Rs) of the table?

If x + 1/x = √13, then 3x(x2-1) equal to

If 9x+2 = 240 + 9x, the value of (8x)x is

If α and β are the roots of equation x2 – 2x + 4 = 0, then what is the equation whose roots are α3/β2 and β3/α2?