List all the factors of the following numbers: (a) 90 (b) 105 (c) 132: Class 7
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Expert Answer
List all the factors of the following numbers: (a) 90 (b) 105 (c) 132: Class 7
Question 1.
List all the factors of the following numbers: Class 7
(a) 90
(b) 105
(c) 132
(d) 360 (this number has 24 factors)
(e) 840 (this number has 32 factors)
Solution:
(a) 90 = 1, 2, 3, 5, 6, 9, 10,15, 30, 45, 90
(b) 105 = 1, 3, 5, 7, 15, 21, 35, 105
(c) 132 = 1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132
(d) 360 = 1, 360, 2, 180, 3, 120, 4, 90, 5, 72, 6, 60, 8, 45, 9, 40, 10, 36, 12, 30, 15, 24, 20, 18
(e) 840 = 1, 840, 2,420, 3, 280, 4, 210, 5,168, 6, 140, 7, 120, 8, 105, 10, 84, 12, 70, 14, 60, 15, 56, 20, 42, 21, 40, 24, 35, 28, 30.