What is the difference between 0.6 and 0.6%?

The least number that must be subtracted from 1294 so that the remaining number when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

The maximum strength of Rajya Sabha is- 

Blood group was discovered by - 

Who wrote the book "Why socialism"? 

If the President of India wants to resign, he has to address the letter of resignation to the- 

The simple interest and the true discount on a certain sum for a given period and at a given rate are 25 and 20 respectively. The sum is 

Some litres of acid were drawn off a 54-litre vessel full of acid and an equal amount of water added. Again, the same volume of the mixture was drawn off and replaced by water. As a result, the vessel contained 24 litre of pure acid. How much of the acid was drawn off initially?