Quantitative Aptitude - Arithmetic Ability Questions

What is the equation of the line passing through the point (2,-3) and making an angle of -45°with the positive X-axis?

Find the area (in sq.cm) of a semi-circle of radius 14cm.

A boy crosses a 300 metres wide road in 30 seconds. What is his speed (in km/hr)?

Find the number of prime factor of 1024.

If the number x3331 is divisible by 11, what is the face value of x?

Average age of 6 boys is 14 years. Average age of 11 girls is 12 years. What is the average age (in years) of all boys and girls?

Three runners A,B and C run a race, with runner A finishing 12 meters ahead of runner B and 18 meters ahead of runner C, while runner B finishes 8 meters ahead of runner C. Each runner travels the entire distance at a constant speed. The length of the race is

If X2+4y2+z2-4x-2z+5-0, then find the value of y15+x5z14