Manish ji it can be 500 times too. I had stirred up a hornet's nest in my thread a couple of months ago when i posted an eod chart of an option going from Rs.0.20 to Rs 148 in the last half an hour on expiry day. It could have resulted in a profit of Rs.56.1 lakh against a risk of Rs.10000. (Of course i did not trade it).