Order List
The price shown against the share that keeps changing is the price for the last trade.
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Looking at this list of orders, we can see that the last price for the trade will be 378 rupees.
This will mean that the last traded price will become 378.
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Now, the next matching order price seems to be 378.5 rupees.
So, now the last traded price is 378.5.
So now you can see how the prices change.