All possible 3 digits, from the number 1, 2, 3, 6, 8 and 9 hectares, are written in the notes. Duplicate numbers, one number is not allowed. If these documents are randomly selected, what is the probability that they contain the number 262? What is the first digit of the probability when the first hand-drawn branch is to replace another randomly selected 1 branch? This branch is 3.
If you want to choose a card, you can choose one from a standard deck. The probability of finding it proves to be:
2 。 The scene of the trump card
3. Advisory Committee, or Face Card
4.an or red card
5 。 Plum blossom or queen
6 。 Plum blossom or red card
7. Club or face-to-face card.
That's enough, right?