Quantitative Aptitude - Arithmetic Ability Questions

If (1 + cosA)/(1 - cosA) = x, then x is

If 1/(1 + cosA) + 1/(1 ­- cosA) = x , then value of x is

In the given figure, the angle bisectors of B and C of an isosceles triangle intersect at point O. Find the angle BOC (in degree), when ∠ABC = ∠ACB = 75°.

The ratio between the weights of gold and silver in an alloy is 17:3. If the weight of silver in the alloy is 2.7 gm, find the weight of gold in the alloy?

What is the HCF (highest common factor) of 77 and 275?

If a+1a=1,then the value of a2-a+1a2+a+1 is a≠0

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?

ABCD is a trapezium in which AB is parallel to CD and AB = 4(CD). The diagonals of the trapezium intersects at O. What is the ratio of area of triangle DCO to the area of the triangle ABO?