Respuesta :

lunaishere48

Answer:

7

Step-by-step explanation:

Mean = 6

so work backwards.

6 x 4 = 24

24 = total amount of all cards added together.

24 - 4 - 6 - 7 = 7

kosukeruki

Answer:

the blank number is 7

Step-by-step explanation:

Mean : add all the numbers and divide by how many there is

4+7+6=17

we need to be able to divide it by 4 to make 6

6 x 4=24

so 4+7+6+x=24

24-17=7