Quantitative Aptitude - Arithmetic Ability Questions

If ABCD is a Cyclic Quadrilateral, then the value of Cos2A - Cos2B - Cos2C + Cos2D is

3 men dig a hole in 10 days. How many days would it take for 5 men to dg the same hole?

The height of a tower is 50√3 m. The angle of elevation of a tower from a distance 50 m from its feet is

AD is the Median of Δ ABC. If O is the centroid and AO = 10 cm then OD is

The sum of two digits of a number is 10. If the digits are interchanged, then its value increases by 18. Find the number.

In a rhombus _____.

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

In a triangle the length of the side opposite the right angle is 6 cm, what is the length of the side opposite to the angle which measures 30°?