1.

List out all the common factors of the following pairs of numbers. (a) 120 and 160 (b)52 and 32

Answer» Correct Answer - (a) 1,2,4,5,8,10,20,40
(b) 1,2,4
(a)
`{:(120=1xx120,|,160=1xx160),(=2xx60,|,=2xx80),(=3xx40,|,=4xx40),(=4xx30,|,=5xx32),(=5xx24,|,=8xx20),(=6xx20,|,=8xx20),(=8xx15,|,),(=10xx12,|,):}`
The common factors of 120 and 160 are {1,2,4,5,8,10,20,40}
(b)
`{:(52=1xx52,|,32=1xx32),(=2xx26,|,=2xx16),(=4xx13,|,=4xx8):}`
The common factors of 52, 32 are {1,2,4}.


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