Quantitative Aptitude - Arithmetic Ability Questions

p3 + q3 + r3 – 3pqr = 4. If a = q + r, b = r + p and c = p + q, then what is the value of a3 + b3 + c3 – 3abc?

If sin π/6 + sec π/6 = x, then x is

If cosA = x, then x is

If √(1 + cot2A)/cotA = x, then the value of x is

An amount fetched a total simple interest of Rs. 3200 at the rate of 6.25 %/yr in 4 years. What is the amount (in Rs)?

From the circumcentre I of the triangle ABC, perpendicular ID is drawn on BC. If ∠BAC = 60°, then the value of ∠BID is

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

The average marks of 45 students is shown as 65. It includes a wrong entry of 84 marks instead of 48 marks. The correct average is: