Quantitative Aptitude - Arithmetic Ability Questions

The HCF of two numbers is 12 and their LCM is 72. If one of the two numbers is 24, then the other number is

What is the value of cot 11π/6?

What is the value of ( 1/2 - cot45) ?

What is the least number that when divided by 63 and 105 leaves remainder 4 in each case?

For what value of X, 211X will be a perfect square?

If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).

The co-ordinates of the centroid of a triangle ABC are (1 , -4). What are the co-ordinates of vertex C if co-ordinates of A and B are (3 , -4) and (0 , 5) respectively?

The third proportional of two numbers 24 and 36 is