GMAT which of the following fractions has a decimal equivale
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/18 19:19:26
GMAT
which of the following fractions has a decimal equivalent that is a terminating decimal?
a.10/189 b.15/196 c.16/225 d.25/144 e.39/128
时间来不及的!
which of the following fractions has a decimal equivalent that is a terminating decimal?
a.10/189 b.15/196 c.16/225 d.25/144 e.39/128
时间来不及的!
Notice:
1/2 = 0.5 (good)
1/3 = 0.3333.(bad)
1/4 = 0.25 (good)
1/5 = 0.2 (good)
1/6 = 0.16666...(bad)
1/7 = 0.142857142857...(bad)
1/8 = 0.125 (good)
1/9 = 0.11111...(bad)
1/10 = 0.1 (good)
1/11 = 0.0909...(bad)
etc.
189 --> 1 + 8 + 9 = 18 (multiple of 3)
196 --> 2 x 2 x 7 x 7 (multiple of 7)
225 --> 2 + 2 + 5 = 9 (multiple of 3)
144 --> 1 + 1 + 4 = 6 (multiple of 3)
128 --> 2 x 2 x 2 x 2 x 2 x 2 x 2
128 has only factors of 2 (or 5).
Answer:
E.39/128
1/2 = 0.5 (good)
1/3 = 0.3333.(bad)
1/4 = 0.25 (good)
1/5 = 0.2 (good)
1/6 = 0.16666...(bad)
1/7 = 0.142857142857...(bad)
1/8 = 0.125 (good)
1/9 = 0.11111...(bad)
1/10 = 0.1 (good)
1/11 = 0.0909...(bad)
etc.
189 --> 1 + 8 + 9 = 18 (multiple of 3)
196 --> 2 x 2 x 7 x 7 (multiple of 7)
225 --> 2 + 2 + 5 = 9 (multiple of 3)
144 --> 1 + 1 + 4 = 6 (multiple of 3)
128 --> 2 x 2 x 2 x 2 x 2 x 2 x 2
128 has only factors of 2 (or 5).
Answer:
E.39/128
GMAT which of the following fractions has a decimal equivale
Which of the following numbers if expressed in decimal form,
Which of the following sentences has an object complement?A.
Which of the following words has two syllables?A
The digit 4 has a value of 0.4 in which of the following?A.5
Which of the following states of a compound has the greatest
Which word of the following has a different stress from the
Which word of the following has the different syllables?A.eg
Which of the following has the greatest value?A.1.73^999 B.2
which world of the following has a different stress from the
Which of the following is a hobby?
which of the following is a directive?