A standard lot = 100 000 units.
A unit is a variable amount dependant upon the base
currency of the pair in question.
So therefore 1 lot is not always equal to $100 000.
For example when the Euro is the base, a unit equals
100 000 x Eur/Usd rate at the time of the trade.
With 100:1 leverage the margin required would be the
unit value divided by 100.
So if the base currency were USD 1 lot = £100 000
& $100 000/100 = $1 000 this is the margin required to
activate a trade of 1 lot.
But in the 2nd question, in a mini account, they have reduced
the lot size to a mini lot, 10 000 units instead of 100 000 units.
Then the math is correct 10 000/200 = 50.
Your margin is just a deposit to activate a trade, it is therefore
returnable at the end of the trade, minus/plus trade losses/gains.
Quote:
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I'm sorry for the stupid questions
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You would be surprised how many experienced traders are not
aware of the above explanation.