Quantitative Aptitude - Arithmetic Ability Questions

α and β are the roots of quadratic equation. If α + β = 8 and α – β = 2√5, then which of the following equation will have roots α4 and β4?

The surface area of a sphere is 1386 cm2.  Find its diameter (in cm)

What is the simplified value of (cos A + sin A)(cot A + tan A)?

In the given figure, P  is the center of the circle. If QS = PR, then what is the ratio of angles RSP to the TPR ?

To get number 40, the number 56/9 should be multiplied with

The sum of 15 observations of a data is (434 + x). If the mean of the data is x, then the value of x is

When a number x is divided by a divisor it is seen that the divisor = 4 times the quotient = double the remainder. If the remainder is 80 then the value of x is

Diameter of wheel of a cycle is 21 cm. The cyclist takes 45 minutes to reach a destination at a speed of 16.5 km/hr. How many revolutions will the wheel make during the journey?