Simplify 6P2.
A. 30
B. 15
C. 12
D. 720
The formula for permutation is:
nPr = n!/(n-r)!
where n is the total number of items and r is the number of items being chosen.
In this case, 6P2 would be:
6P2 = 6!/(6-2)! = 6!/4! = (6x5)/2 = 30
Therefore, the answer is A. 30.
The formula for combination is:
nCr = n!/r!(n-r)!
where n is the total number of items and r is the number of items being chosen.
In this case, 9C4 would be:
9C4 = 9!/4!(9-4)! = 9!/4!5! = (9x8x7x6)/(4x3x2x1) = 126
Therefore, the answer is 126.
3! means 3 factorial and is the product of all positive integers up to and including 3.
3! = 3 x 2 x 1 = 6
Therefore, the answer is 6.
Probability Unit Test Part 1
1. B Experimental; the result is found by repeating an experiment.
2. C Theoretical; the result is based on the number of possible outcomes
3. B 47/120; 1/6
4. C 5/11
5. B 7:4
6. D 3/52
7. D 96/1849
8. B 24/65
9. D 1/12
10. B 5/51
11. B 5/91
12. A 30
13. A 1/4096
14. D 6
15. A 30
16. A 126
17. A 720
18. A 10 ways
Yes, this is all correct i just finished the full test.