Hedging formula of equity portfolio: N=β*P/F(N is the number of futures contracts to be hedged, p is the current price of equity portfolio, and f is the current price of A futures).
According to your question, there are two answers. One is to sell 3 1 futures contract at 250 times, and the other is to sell 156 futures contract at 50 times. Generally, the former is adopted, and the number of futures contracts is small, which saves money and saves trouble. Why sell it? I don't think I need to elaborate on this.
Did you take the bank recruitment exam? If you are a finance major, you should be a small case. This problem can be solved in this way. Just take a good look at the multiples of various indexes.