When drawing four cards, what is the probability of drawing an ace, a king, a queen, and a jack without replacement?
1 answer:
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the question in English
50 t-shirts were sold at 10€ each. What benefit was obtained if the t-shirts were bought at 7€ each?
Let
x---------> the benefit in euros
we know that
therefore
<u>the answer is</u>
The benefit is equal to