Question

you have 4 number cards 9,8,4 but you dont know the fourth number the mean is 8 what is the fourth number

Answer 1

Answer:

8x×4= 32

9+8+4=21

32 - 21= 11

4th number is 11

Answer 2

Answer:

9+8+4+x/4 =8

9+8+4+x=32

x= 11

∴ the missing card number is 11

Step-by-step explanation:

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