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Consider the experiment of placing three distinguishable particles (which we den

ID: 3354617 • Letter: C

Question

Consider the experiment of placing three distinguishable particles (which we denote by a, b, and c) into W2 = (a cl b |-), etc. a) Write down the sample space . How many sample points are there in Q2 b) Let events A, B, C be defined as three cells. Examples of sample points are on = (a b c1-1-), A- multiple particles occupy a cell; B- the first cell is not empty; C = both A and B occur. How many sample points are there events A, B, and C respectively? Repeat a) and b) if the three particles are indistinguishable. Examples of sample points

Explanation / Answer

Part (a)

Sample Space

Sample Point #

Particles in cell

1

2

3

1

abc

2

abc

3

abc

4

ab

c

5

ab

c

6

c

ab

7

ab

c

8

c

ab

9

c

ab

10

ac

b

11

ac

b

12

b

ac

13

ac

b

14

b

ac

15

b

ac

16

bc

a

17

bc

a

18

a

bc

19

bc

a

20

a

bc

21

a

bc

22

a

b

c

23

a

c

b

24

b

c

a

25

c

b

a

26

b

a

c

27

c

a

b

Part (b)

Number of sample points in A (multiple particles occupy a cell) 21 ANSWER 1

Details of sample points

Sample Point #

Particles in cell

1

2

3

1

abc

2

abc

3

abc

4

ab

c

5

ab

c

6

c

ab

7

ab

c

8

c

ab

9

c

ab

10

ac

b

11

ac

b

12

b

ac

13

ac

b

14

b

ac

15

b

ac

16

bc

a

17

bc

a

18

a

bc

19

bc

a

20

a

bc

21

a

bc

Number of sample points in B (first cell is not empty) 19 ANSWER 2

Details of sample points

Sample Point #

Particles in cell

1

2

3

1

abc

2

ab

c

3

ab

c

4

c

ab

5

c

ab

6

ac

b

7

ac

b

8

b

ac

9

b

ac

10

bc

a

11

bc

a

12

a

bc

13

a

bc

14

a

b

c

15

a

c

b

16

b

c

a

17

c

b

a

18

b

a

c

19

c

a

b

Number of sample points in C (both A and B occur) 13 ANSWER 3

Details of sample points

Sample Point #

Particles in cell

1

2

3

1

abc

2

ab

c

3

ab

c

4

c

ab

5

c

ab

6

ac

b

7

ac

b

8

b

ac

9

b

ac

10

bc

a

11

bc

a

12

a

bc

13

a

bc

Part (c)

The three particles are in-distinguishable.

Sample Space

Sample Point #

Particles in cell

1

2

3

1

abc

2

abc

3

abc

4

ab

c

5

ab

c

6

c

ab

7

ab

c

8

c

ab

9

c

ab

10

a

b

c

Part (d)

Number of sample points in A (multiple particles occupy a cell) 9 ANSWER 1

Details of sample points

Sample Point #

Particles in cell

1

2

3

1

abc

2

abc

3

abc

4

ab

c

5

ab

c

6

c

ab

7

ab

c

8

c

ab

9

c

ab

Number of sample points in B (first cell is not empty) 6 ANSWER 2

Details of sample points

Sample Point #

Particles in cell

1

2

3

1

abc

2

ab

c

3

ab

c

4

c

ab

5

c

ab

6

a

b

c

Number of sample points in C (both A and B occur) 5 ANSWER 3

Details of sample points

Sample Point #

Particles in cell

1

2

3

1

abc

2

ab

c

3

ab

c

4

c

ab

5

c

ab

Sample Point #

Particles in cell

1

2

3

1

abc

2

abc

3

abc

4

ab

c

5

ab

c

6

c

ab

7

ab

c

8

c

ab

9

c

ab

10

ac

b

11

ac

b

12

b

ac

13

ac

b

14

b

ac

15

b

ac

16

bc

a

17

bc

a

18

a

bc

19

bc

a

20

a

bc

21

a

bc

22

a

b

c

23

a

c

b

24

b

c

a

25

c

b

a

26

b

a

c

27

c

a

b