Quantitative Aptitude - Arithmetic Ability Questions

The co-ordinates of the centroid of a triangle ABC are (-1,-2) what are the co-ordinates of vertex C, if co-ordinates of A and B are (6,-4) and (-2,2) respectively?

Which of the following pairs is NOT a pair of twin primes?

The ratio between the vertical angle and a base angle of an isosceles triangle is 4:3. The value of any one base angle is

A shop keeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of cost price to the printed price of the book is

After buying a toy for Rs.45, Raghu managed to sell it at a profit of 15%. The selling price of the toy was

The value of Sin 60 is

If M = (3/7) ÷ (6/5) × (2/3) + (1/5) × (3/2) and N = (2/5) × (5/6) ÷ (1/3) + (3/5) × (2/3) ÷ (3/5), then what is the value of M/N?

The radius and the height of a cone are each increased by 20%. Then the volume of the cone increases by