Which of the following tables shows a valid probability density function? Select all correct answers.

Select all that apply:

1.

x	P(X=x)
0	1/8
1	1/8
2	1/8
3	1/8
4	1/2

2.

x	P(X=x)
0	0.5
1	0.4
2	0.1

3.

x	P(X=x)
0	2/5
1	-1/10
2	1/5
3	1/2

4.

x	P(X=x)
0	2/5
1	-1/10
2	1/5
3	1/2

5.

x	P(X=x)
0	0.13
1	0.48
2	0.14
3	0.54

5.

x	P(X=x)
0	1/2
1	1/10
2	1/10

6.

x	P(X=x)
0	1/8
1	1/4
2	1/4
3	3/8