Quantitative Aptitude - Arithmetic Ability Questions

A, B and C are three points on a circle with centre O. The tangent at C meets BA produced at T. If ∠ATC = 30° and ∠ACT = 48°,then what is the value of ∠AOB ?

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

If (x2/yz) + (y2/zx) + (z2/xy) = 3, then what is the value of (x + y + z)3?

If x + y = 13 and x2 + y2 = 89, then find xy is

If 2secA - (1 + sinA)/cosA = x, then the value of x is

A man travelled a distance of 61 km. in 9 hours , partly by walking at speed of 4 km / hr and partly on bicycle at speed of 9 km / hr. The distance covered by walking is

Cost price of 28 articles is equal to Sale price of 21 articles, then percentage of profit is

Average of all even numbers between 104 and 148 is __________.