Exam | Combinatorics

1.- V_5,3 =

	a) 60
	b) 10
	c) 125
	d) None of them

2.- VR_5,3 =

	a) 125
	b) 60
	c) 10
	d) None of them

3.- P_{5 =}

	a) 24
	b) 25
	c) 120
	d) None of them

4.-

	a) 720
	b) 60
	c) 120
	d) None of them

5.- C_5,3 =

	a) 10
	b) 60
	c) 120
	d) None of them

6.- Solve:

	a) 10
	b) 8
	c) 9
	d) No solution

7.- There are 8 runners in the 100 m Olimpics final. How many different classification results can have?

	a) 720
	b) 1440
	c) 40320
	d) None of them

8.- There are 8 runners in the 100 m Olimpics final. How many different forms can we distribute the medals (gold, silver and bronze)?

	a) 512
	b) 336
	c) 56
	d) None of them

9.- There are 8 runners in the 100 m Olimpics final. If there are 5 runners from America and 3 from Europe, how many different classification results can we have, considering only the continent the runners are from?

	a) 15
	b) 120
	c) 56
	d) None of them

10.- A test has 12 true/false questions. How many different forms can you answer the test?

	a) 4096
	b) 144
	c) 24
	d) None of them