Quantitative Aptitude - Arithmetic Ability Questions

The total surface area of a hemisphere is 462 sq cm, what is its curved surface area? (Take π = 22/7)

What is the difference of the factors of the expression x2 + (1/x2) – 6?

The point equidistant from the vertices of a triangle is called its

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?

If  x = 2+3,then what is the value of 2x + 12x ?

K is 5 years older to H. H is 3 years younger to R. R is 6 years older to C. C is 7 years younger to L. Who is the eldest?

A thief is stopped by a policeman from a distance of 200 metres. When the policeman starts the chase, the thief also starts running. Assuming the speed
of the thief as 8 km/hr and that of police man as 10 km/hr. How far the thief would have run, before he is over ­taken?

At least one diagonal bisects the other in a _____.