S1英文數學功課

2013-09-16 3:55 am

find the H.C.F. of each of the following pairs of numbers.
a) 25 and 45
b) 14 and 75
c) 26 and 78
d) 48 and 120

回答 (3)

2013-09-17 2:23 am

u can write the steps as
factors of 25:1,5.....
until the answer of the other users gave u

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2013-09-17 12:15 am

a) 25=5*5
45=5*9
the H.C.F.=5

b) 14=1*14
75=1*75
the H.C.F.=1
c) 26=26*1

78=26*3

the H.C.F.=26
d)48=24*2
120=24*5
the H.C.F.=24

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2013-09-16 4:12 am

H.C.F=highest common factor (最大公因數)
要找最大的因數
a)5

b)7

c)13

d)24

參考: Me

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