Question

If the mean of four numbers 4, 8, x and 12 is 10, then x is *

Answer 1

Answer:

-4

Step-by-step explanation:

Mean=4+8+12+x/4

10=24+x/2

10×2=24+x

20=24+x

20-24=x

-4=x

Answer 2

Step-by-step explanation:

Answer is 16

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