將標示號碼 1 的 1 張號碼牌,號碼 2 的 2 張號碼牌,號碼 3 的 3 張號碼牌,號碼 4 的 4 張號碼牌放入袋子中。若 10 個號碼的中位數為 A,每張號碼被取到的機會相同,則自袋中任取一張牌,號碼小於 A 的機率為何?

九下數學-機率

Quiz
•
Mathematics
•
9th Grade
•
Hard
蔡佩旻 蔡佩旻
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1/5
3/10
2/5
3/5
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
有甲、乙兩個袋子,甲袋中有紅球、白球、黑球各一個,乙袋中有紅球、白球、黑球各一個,現在從甲、乙兩袋各任取一球,則取出的兩球是同色球的機率為何?
1/6
1/3
1/2
2/3
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1班學生 40 人,在一次段考中,英文及格有 30 人,數學及格有 25 人,兩科都及格有 20 人,則從此班中任意抽取一人,他是兩科都不及格的機率為何?
1/8
1/5
1/4
1/10
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
翰翰投擲兩顆公正的骰子,擲得兩個點數,則此兩點數乘積是 4 的倍數的機率為何?
13/36
15/36
11/36
10/36
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
小英以投擲一顆公正的骰子的點數當作一元二次方程式 x2+ax+1=0 中,x 的係數 a 的值,今小英投擲這顆骰子一次,使此方程式有解的機率為何?
5/6
2/3
1/2
1/3
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
1/4
7/16
9/16
3/4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
由編號 1 至 200 且大小相同的卡片當中,任取一張,此張卡片之編號中至少有一個 5 的機率是多少?
7/10
1/5
1/10
19/100
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