Quantitative Aptitude - Arithmetic Ability Questions

4 + 16 x -12 x 24 - 13 - 3 ÷ 20 - 4 = ?

The sum of the parallel sides of a trapezium is 12.4 cm. If the distance between the parallel sides is 3.5 cm, what is the area of this trapezium?

If secθ + tanθ = 4, then secθ - tanθ = ?

What is the simplified value of (sec4 A – tan2 A) – (tan4 A + sec2 A)?

Find  two  natural  numbers  whose  sum  is  85 andtheleast common multiple is 102.

The traffic lights at four different road crossings change after every 15 sec, 18 sec, 27 sec and 30 sec respectively. If they all change simultaneously at 6:10:00 hours, then at what time will they again change simultaneously?

What is the mean of the first five Triangular Numbers?

Volume of a cube is 512 cubic cm, find its total surface area? (Take π = 22/7)