The factors of 63 are:
1, 3, 7, 9, 21, 63
The factors of 65 are:
1, 5, 13, 65
The factors of 66 are:
1, 2, 3, 6, 11, 22, 33, 66
The factors of 68 are:
1, 2, 4, 17, 34, 68
The factors of 69 are:
1, 3, 23, 69
The factors of 74 are:
1, 2, 37, 74
The factors of 75 are:
1, 3, 5, 15, 25, 75
The factors of 16 are:
1, 2, 4, 8, 16
The factors of 63 are:
1, 3, 7, 9, 21, 63
The factors of 75 are:
1, 3, 5, 15, 25, 75
1, 2, 4, 7, 8, 14, 28, 56
1, 3, 7, 9, 21, 63
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
1, 3, 7, 9, 21, 63
1, 2, 5, 7, 10, 14, 35, 70
The common factors are: 1, 3.
Factors of 36... 1,2,3,4,6,9,12,18,36. Factors of 65... 1,5,13,65 The only (and therefore greatest common factor is 1
68: 1, 2, 4, 17, 34, 68 69: 1, 3, 23, 69
65
The factors of 62 are: 1, 2, 31, 62 The factors of 68 are: 1, 2, 4, 17, 34, 68
65, 66, 68, 72, 80, 96 or 128 depending on whether you're counting by 1, 2, 4, 8, 16, 32 or 64.
60, 62, 63, 64, 65, 66, 68, 69, 70
65
All are composite except 61 and 67. Composite numbers: 60, 62, 63, 64, 65, 66, 68, 69, 70
Factors of 36... 1,2,3,4,6,9,12,18,36. Factors of 65... 1,5,13,65 The only (and therefore greatest common factor is 1
Between 60 and 70 the composite numbers are: 62, 63, 64, 65, 66, 68, 69. 60 and 70 are also composite.
60, 62, 63, 64, 65, 66, 68, 69, 70
-20
57, 58, 60, 62, 63, 64, 65, 66, 68, 69
62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77 and 78.
62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77 and 78.
It is: 1
(s + 65 + 62 + 70 + 68) / 5 = 66.2 ∴ s + 65 + 62 + 70 + 68 = 331 ∴ s = 331 - 65 - 62 - 70 - 68 ∴ s = 66