Find the missing number when the mean (average) is given
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x=19
12, x, 22, 27, 23, 17 Mean=20
x=20
2, 7, 16, 23, 4, x Mean=12
x=19
24, x, 13, 32, 12 Mean=20
x=3
31, x, 8, 29, 5, 14 Mean=15
x=35
39, 45, 42, 31, x, 42 Mean=39
x=31
45, 51, 28, x, 36, 49 Mean=40
x=9
5, 14, 12, x, 10, 4 Mean=9
x=65
68, 51, x, 59, 62 Mean=61
x=81
72, 56, x, 77, 69 Mean=71
x=86
84, 92, 79, x, 82, 93 Mean=86
x=87
91, 94, x, 78, 90 Mean=88
x=35
x, 47, 32, 24, 22 Mean=32
x=64
x, 55, 51, 67, 53 Mean=58
x=79
x, 75, 68, 61, 86, 57 Mean=71