Quantitative Aptitude - Arithmetic Ability Questions

A solid sphere and a solid hemisphere have the same total surface area. The ratio of their volumes is (Take, π=22/7)

What is the value of [(sin x + sin y) (sin x – sin y)]/[(cosx + cosy) (cosy – cosx)]?

What is the value of Cot 45° - (1/√3)Cosec 60°?

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

If -3[1-(x/2)] + 5x/3 = 1/6, then what is the value of x?

ABCD is a quadrilateral with AB = 9 cm, BC = 40 cm, CD = 28 cm, DA = 15 cm and angle ABC is a right –angel
What is the difference between perimeter of triangle ABC and perimeter of triangle ADC?

There is 40% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 10000 after 3 years at the same rate?

The point where the 3 medians of a triangle meet is called