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                                      Today we are going to learn about Barter system Barter system what is a barter system? In the old days when there was no money People exchanged services and goods for other services and goods in return. Introduced by Mesopotamia tribes,Goods was exchanged for food, tea, weapons Example,  suppose you have 2 potatoes and you want bread and another person have bread and he want potatoes so you both can exchange your commodities. What are the problems in barter system? 1.Double Coincidence of Wants         Suppose you want bread in exchange of potatoes, then you have to find a person who has bread and want's potatoes which sometimes with such a diverse commodities, It is difficult to find. 2.Lack of a Standard Unit of Account         When you find such a person ,after that who will decide how many potatoes you...

                                                                    Today we are going to take a glance at life of Albert Einstein. he is known as the Father of Modern Physics. he had difficulties in learning in his early stage of life. he a was slow learner as a child and had speech problems. he was famous for being absent minded. he could not remember names. he always was thinking in terms of Pictures. he had developed intrest for maths and physics during his school days. at age of 17,he enrolled in the four-year mathematics and physics teaching diploma programme click here to watch short biography of albert einstein If you want to know more about this Genius and what was project Manhattan ,watch this short video click here to watch