3. Given that there were 4 Heads in the first 7 tosses, find the probability that the 2nd Heads occurred at the 4th toss. Give a numerical answer.______
0.25714
举一反三
- Please give the correct order of talking about the weather logically. (1) give your opinion (2) give a fact (3) give a description (4)give a comparison A: (2) (3) (4) (1) B: (3) (4) (1) (2) C: (2) (4) (1) (3) D: (4) (2) (3) (1)
- There are a lot of good heads in the university.The “heads” in this sentence refers to ________.
- 【单选题】A=[3 4 5;4 2 6];B=[4 2 7];C=[A;B] 运行的结果为 A. [3 4 5 4 2 6 4 2 7] B. [3 4 4;4 2 2;5 6 7] C. [3 4 5;4 2 6;4 2 7] D. [4 2 7;3 4 5;4 2 6]
- All heads of state were _______ at the memorial ceremony. （ ） A: at a disadvantage B: in attendance C: at a time D: all at once
- Let’s put our heads together and find ______ to the puzzle. A: the way B: the method C: the solution D: the result
内容
- 0
What should the department heads do when they attend the meeting?The department heads are each required to hand in a . .
- 1
谱例的实际演奏顺序是（ ）[img=980x110]17da6e2f65f1335.png[/img] A: 1 2 3 4 3 4 5 6 7 8 B: 1 2 3 4 5 6 7 8 1 2 C: 1 2 3 4 5 6 7 8 3 4 D: 1 2 3 4 5 6 7 8 1 2 3 4 3 4
- 2
The following complex sentence emphasizes the simple sentence-- Mr. Wang is to speak first at the meeting.Mr. Wang, who heads the bankers’ association in this city, is to speak first at the meeting.
- 3
上颌恒牙常见的萌出顺序是（） A: 1、2、3、4、5、6、7 B: 1、2、3、5、4、6、7 C: 6、1、2、3、4、5、7 D: 6、1、2、4、3、5、7 E: 1、6、2、4、3、5、7
- 4
上颌恒牙萌出常见的顺序是（）。 A: 6→1→2→3→4→5→7 B: 6→1→2→3→5→4→7 C: 6→1→2→4→5→3→7 D: 1→6→2→3→4→5→7 E: 1→2→6→4→3→5→7