Quantitative Aptitude - Arithmetic Ability Questions

In a company 2/3 of the workers are girls, 1/2 of the girls are married and 1/3 of the married girls live in hostel. If 3/4 of the boys are married and 2/3 of married boys live in hostel. Calculate the part of workers who don’t live in hostel.

An octahedron has 6 vertices. How many edges does it have?

If  C+1C = 3, then what is the value of C3+1C3 = ?

What is the equation of a line having a slope -1/3 and y-intercept equal to 6?

If the sum of the measures of all the interior angles of polygon is 2340°. What is the number of sides of the polygon?

In ΔXYZ measure of angle Y is 90 deg. If cot X = 5/12, and XY = 2.5 cm, then what is the length (in cm) of side XZ?

The reciprocal of the sum of the reciprocals of 8/7 and 5/6 is:

9 hrs after a goods train passed a station, another train travelling at a speed of 72 km/hr following that goods train passed through that station. If after passing the station the train overtakes the goods train in 3 hours. What is the speed of the goods train?