Quantitative Aptitude - Arithmetic Ability Questions

If the number 583_437 is completely divisible by 9, then the smallest whole number in the place of the blank digit will be

If a and b are the roots of the equation Px2 – Qx + R = 0, then what is the value of (1/a2) + (1/b2) + (a/b) + (b/a)?

A certain amount of money is divided between A and B in the ratio of 5:6. If B gets Rs. 360, the amount is

If cotA = x, then the value of x is

∆ABC is right angled at B. If m∠A = 30°, then find the value of (sinC + 1/3).

An alloy is made by mixing metal A costing Rs 2000/kg and metal B costing Rs 400/kg in the ratio A:B = 3:1. What is the cost (in Rs) of 8 kilograms of this alloy?

Abhinav is 2 times as good a workman as Balwant and therefore is able to finish a job in 36 days less than Balwant. Working together, they can do it in

An alloy contains copper and tin in the ratio 3 : 2. If 250 gm of copper is added to this alloy then the copper in it becomes double the quantity of tin in it. What is the amount (in gm) of tin in the alloy?