Lets take one Bull market example and we enter the trade. If its Bull market we have to Buy one lot of Nifty future near month contract ( May-2011).Today's Nifty range is 5500, so you need to calculate how much the cost of one standard Nifty future lot.
For Example Nifty trading at 5500 this amount to be multiplied by 50 that means 5500*50=2,75,000, woooooooow This much amount need for one lot, don't worry here Leverage come to the picture, that means you need to pay only 10% to 15% of the total amount. It will cost you one Lot aroung 27,000 to 35,000 Rupees.
To trade on LOT NIFTY FUTURE you need Rs 27000 to 35000.
Now we took one lot of Nifty future Buy at the point of 5500 , form here market moved up ward direction to 5600 as per our prediction, we calculate the point again 5600*50= 2,80,000.
Profit calculation:Sell - Buy = Profit
------------------
Sell at = 5600*50 = 2,80,000.
Buy at = 5500*50 = 2,75,000.
Profit = +5,000.
For the investment of Rs 30000 App, we got Rs 5000 that means 17% profit of our Investment.