All of the integers from 64 down to 57, and from 55 down to 39, are missing.
-20
53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70
54 55 56 57 58 60 62 63 64 65 66 68 69
56, 57, 64, 65, 66, 75, 76 Mean: 65 and 4/7 Median: 65 Mode: There is no mode. Range: 20
mean = (65 + 56 + 57 + 75 + 76 + 66 + 64)/7 = 65.57 median = "middle" number = 65 mode = most common number = all are equally common
All of the integers from 64 down to 57, and from 55 down to 39, are missing.
-20
The composite numbers between 50 and 65 are 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65
53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64
50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70
54 55 56 57 58 60 62 63 64 65 66 68 69
They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69They are32 33 34 35 36 3839 40 42 44 45 4648 49 50 51 52 5455 56 57 58 60 6263 64 65 66 68 69
65
Range: 24 Median: 59.5 Mode: 57, 61, 58, 54, 68, 51, 65, 75
These: 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69.