Find thecommon factors of:
(a) 4, 8and 12 (b) 5, 15 and 25

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Solution

(a) 4, 8,12
Factors of 4 = 1, 2, 4
Factors of 8 = 1, 2, 4, 8
Factors of 12 = 1, 2, 3, 4, 6, 12
Common factors = 1, 2, 4
(b) 5, 15,and 25
Factors of 5 = 1, 5
Factors of 15 = 1, 3, 5, 15
Factors of 25 = 1, 5, 25
Common factors = 1, 5

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Similar questions

4, 8

12

5, 15

25

Question 2 (b)

Find the common factors of:
5, 15 and 25

Class	0−5	5−10	10−15	15−20	20−25	25−30	30−35	35−40
Frequency	12	a	12	15	b	6	6	4

Find the common factors of:

(a) 20 and 28 (b) 15 and 25

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