已知 a = ( −12 ) × ( −23 ) × ( −34 ) × ( −45 ),b = ( −123 ) × ( −234 ) × ( −345 ), 判斷下列敘述何者正確?
國中教育會考(數學)

Quiz
•
Mathematics
•
7th - 9th Grade
•
Hard
liling chang
Used 18+ times
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15 questions
Show all answers
1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
a 為正數, b 為負數
)a 為負數, b 為正數
a、b 皆為正數
a、 b 皆為負數
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
小真煮好了 25 顆湯圓,其中 15 顆為芝麻湯圓,10 顆為花生湯圓。已知小真 想從煮好的湯圓中撈一顆,若每顆湯圓被小真撈到的機會相等,則他撈到花生 湯圓的機率為何?
1/2
2/3
2/5
1/10
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
如圖 ( 一 ),平行四邊形 ABCD 中,∠ A = 100° 。 若 ∠ ABD:∠ DBC= 3 : 2, 則 ∠ DBC 的度數為何?
32
40
68
80
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
下列何者可表示成兩個質數的乘積?
27
29
38
81
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
某城市分為南、北兩區,圖 ( 一 ) 為 105 年到 107 年該城市兩區的人口數量 長條圖。根據圖 ( 一 ) 判斷該城市南區的人口數量,從 105 年到 107 年的變化 情形為下列何者?
逐年增加
先減少,再增加
逐年減少
先增加,再減少
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
計算 ( 2x − 2 )( 3x + 4 ) 的結果,與下列哪一個式子相同?
−7x + 8
−7x − 8
6x^2 − 10x-8
6x^2+2 x −8
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
民國 106 年 8 月 15 日,大潭發電廠因跳電導致供電短少約 4300萬瓩,造成 全臺灣多處地方停電。已知 1 瓩等於 1 千瓦,求 4300 萬瓩等於多少瓦?
4.3 × 10^7
4.3 × 10^8
4.3 × 10^9
4.3 × 10^10
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