Quantitative Aptitude - Arithmetic Ability Questions

What is the quotient when 7251 is divided by 66?

What is the ratio of simple interest earned on certain amount at the rate of 12% for 6 years and that for 12 years?

In ΔABC measure of angle B is 90 deg. If cosA = 5/13, and AB = 10 cm, then what is the length (in cm) of side BC?

The ratio of the number of marbles that Joyee and Minati had was 5 : 8 while the ratio of the number of marbles that Jacob and Minati had was 7 : 12. What is the ratio of the number of marbles that Joyee and Jacob had?

The LCM of 72 and 84 is:

What is the reflection of the point (3,-5) in the origin?

If a+1b=1 and b+1c=1 , then the value of c+1a is

[sinA/(1 + cosA)] + [(1 + cosA)/sinA] is equal to