Quantitative Aptitude - Arithmetic Ability Questions

Simplify: (213 x 213 + 187 x 187)

What is the measure of an interior angle of a regular decagon?

After selling 5% of a quantity of sugar, 5 Kgs of sugar remains . Find the total quantity of sugar?

A box contains 5 green, 4 yellow and 3 white marbles. Threemarbles are drawn at random. What is the probability thatthey are not of the same colour ?

A man travels 404 kilometres in partly by rail and steamer. He spends 10 hours more time on steamer. If the speed of the steamer is 30 km/hr and the velocity of rail is 50 km/hr, how much distance does he cover by steamer?

x, y and z are prime numbers and x + y + z = 38. What is the maximum value of x?

In triangle XYZ, G is the centroid. If XY = 11 cm, YZ = 14 cm and XZ = 7 cm, then what is the value (in cm) of GM ?

What is the measure of central angle of the arc whose length is 11 cm and radius of the circle is 14 cm?