Quantitative Aptitude - Arithmetic Ability Questions

A hexagonal prism has 18 edges. How many vertices does it have?

The numbers x, y, z are respectively proportional to 2, 3, 5 and the sum of x, y and z is 80. If the number z is given by the equation z = ax­-8, then a is

The distance between two cities X and Y is 270 km. First train starts from X at 7:00 a.m. and travels towards Y at 40 km/hr. Second train starts from Y at 8:30 a.m. and travels towards X at 30 km/hr. At what time (in a.m.) will both the trains meet?

If sin8 θ + cos8 θ – 1 = 0, then what is the value of cos2 θ sin2 θ (If θ ≠ 0 or π/2)?

What will be the equation of the perpendicular bisector of segment joining the points (5,­3) and (0,2)?

∆DEF is right angled at E. If tanD = 4/3, then what is the value of tanF ?

What will be the value of xy, if x2+y2 = 45 and x-y=5 ?

If a+1b=1 and b+1c=1 , then the value of c+1a is