Quantitative Aptitude - Arithmetic Ability Questions

A right circular cylinder is partially filled with water. Two iron spherical balls are completely immersed in the water so that the height of the water in the cylinder rises by 4 cm. If the radius of one ball is half of the other and the diameter of the cylinder is 18 cm, then the radii of the spherical balls are

The simplification value of 735+2-552+7+227+5 is

The vertical angle A of an isosceles triangle ΔABC is three times the angle B of it. The measure of the angle A is

The ratio of the cost price and selling price of an article is 5 : 3. What is the loss percentage?

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?

On dividing a number by 38, we get 70 as quotient and 12 as remainder. What is the number?

What is the value of √[(1 + sinA)/(1 -­ sinA)]?

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and DE are 9 cm, 6 cm and 5.4 cm respectively find length of BC?