If , and , then what is the value of ?

Find the HCF of 306, 204 and 136.

After a discount of 20% Asmita bought an item for Rs.9600. Asmita sold it to other person and earned a profit of 18% on the original price. At what price other person bought the item?

X liters of milk is taken out and replaced with water from a container having 240 liters milk. Now, 20% of the mixture is taken out and replaced with water. In final mixture, the difference in quantity of milk & water is 128 liters. Find X.

To travel 432 km, an Express train takes 1 hour more than Duronto. If however, the speed of the Express train is increased by 50%, it takes 2 hours less than Duronto. What is the speed (in km / hr) of Duronto train? 

If a,b,c,d,e,f,g  are seven consecutive odd number, their average is

In the given Figure ∠PQA = 20° and ∠APQ = 120° then the find out the ∠ PAQ=?