Quantitative Aptitude - Arithmetic Ability Questions

Thousand solid metallic spheres of diameter 6 cm are melted and recast into a new solid sphere. The diameter of the new sphere (in cm) is

Three solid spheres of radius 3 cm, 4 cm and 5 cm are melted and recasted into a solid sphere. What will be the percentage decrease in the surface area?

AB is a chord of the circle and its center is “O”. ON is perpendicular to AB. If the length of AB=20 cm, ON-(2√11) cm, find the radius (in cm) of the circle.

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is

If x2+1x2-6, then find the value of 2x(x-1)x3-x2-x+1

The salary of a person is reduced by 20% . To restore the previous salary, his present salary is to be increased by

Findout the odd word/letters/number/number pair from the given alternatives.

ΔABC is right angled at B. If m∠C = 60°, then find the value of (cotA - 1/2).