Quantitative Aptitude - Arithmetic Ability Questions

Find the 4th proportional to 9, 17 and 27.

What is the value of Sin 30° - Cosec 45°?

If ax + by = 1 and bx + ay = 2aba2+b2 then x2+y2a2+b2 is equal to

The solution set of 4x - 3y = 47 and 3x + y = 32 is

If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).

Find the area (in sq.cm) of a semi-circle of radius 7 cm

The line segment AB intersects the straight line CD at B; AB will be smallest when ∠ ABD (in degrees) is

Working together P, Q and R reap a field in 6 days. If P can do it alone in 10 days and Q in 24 days, in how many days will R alone be able to reap the field?