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特別会員一種外務員 (Special Member Class 1)
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問題1：先物取引の証拠金 / Question 1: Futures Trading Margin
ある投資家が、日経225先物を1枚買い建てました。証拠金所要額が50万円、維持証拠金が40万円の場合、追加証拠金（追証）が発生するのは、日経225先物の価格がいくら下落した場合ですか？（ただし、1枚当たりの取引単位は1,000倍とする）
An investor bought one Nikkei 225 futures contract. If the required margin is 500,000 yen and the maintenance margin is 400,000 yen, how much must the Nikkei 225 futures price fall for a margin call to occur? (Assume a trading unit of 1,000 per contract).
An investor bought one Nikkei 225 futures contract. If the required margin is 500,000 yen and the maintenance margin is 400,000 yen, how much must the Nikkei 225 futures price fall for a margin call to occur? (Assume a trading unit of 1,000 per contract).
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