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Anestetic [448]
3 years ago
8

Number 3 I need some help

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
6 0

Answer:

15+10x>_75

Step-by-step explanation:

so last one

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Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes

The combinations formula is important in this problem:

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C_{n,x} = \frac{n!}{x!(n-x)!}

Desired outcomes

You want 2 queens. Four cards are queens. I am going to call then A,B,C,D. A and B is the same outcome as B and A. That is, the order is not important, so this is why we use the combinations formula.

The number of desired outcomes is a combinations of 2 cards from a set of 4(queens). So

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Total outcomes

Combinations of 2 from a set of 52(number of playing cards). So

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P = \frac{D}{T} = \frac{6}{1326} = 0.0045

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