Quantitative Aptitude - Arithmetic Ability Questions

In a class of 50 students there are 27 boys. The average weight of these boys is 72 Kg and average weight of the full class is 55.44 kgs. What is the average weight (in kgs) of the girls of the class?

In a triangle XYZ , which of the following conditions is true

In a triangle, the distance of the centroid from the three vertices is 4cm, 6cm and 8cm respectively. Then the length of the smallest median is:

Select the odd word/letters/number/number pair from the given alternatives.

The simplest value of 38-212+20318-227+45 is

At what point does the line 2x + 5y = -6 cuts the X-axis?

If tan2A - tan2B = x, then the value of x is

In the given figure, a circle touches the sides of the quadrilateral PQRS. The radius of the circle is 9 cm. RSP = SRQ = 60 deg and PQR = QPS = 120 deg. What is the perimeter (in cm) of the quadrilateral?