Question

The mean of three numbers are 4

Answer 1

Answer:

(1+9+x)/3 = 4

10+ x = 12

x = 2 is required answer..

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Answer 2

Answer:

2

Step-by-step explanation:

Take "?" as "x"

(1+9+x)/3 = 4

(10+x)/3 = 4

10+x = 4×3 = 12

x = 12-10

x = 2