Respuesta :
Answer:
6, 7, 8, 9, 10, 11, and 12, with a total of 7 cards.
Step-by-step explanation:
Minimum Value and Range: The smallest number on a card is 6, and the difference between the biggest and smallest numbers is 7.
Mean (Average): When we add up all the numbers on the cards and divide by how many cards there are, we get an average of 9.
Now, let's find out how many cards there are and what their numbers are:
Since the range is 7 and the smallest number is 6, the biggest number is 6+7=13.
We know the average of the numbers on the cards is 9. This means if we add up all the numbers and divide by how many cards there are, we get 9.
By looking at the numbers from 6 to 13, we can see that there are 4 numbers (7, 8, 9, 10) that are above 6 and contribute to making the average higher.
Therefore, there must be 4 cards with numbers 7, 8, 9, and 10. Additionally, there are 3 cards below 9 (6, 7, 8) to balance the average.
So, the numbers on the cards are 6, 7, 8, 9, 10, 11, and 12, with a total of 7 cards.
