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Gre4nikov [31]
3 years ago
14

A certain lottery​ game, 32 numbers are randomly mixed and 7 are selected. A person must pick all 7 numbers to win. Order is not

important. What is the probability of​ winning?
Mathematics
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer:

Below.

Step-by-step explanation:

The number of combinations of 7 from 32 =  32! / 7! (32-7)!

= 3365856

So it is 1/ 3365856 = 0.000000297

or about 3 in 10,000,000.

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A jar contains two red marbles, three green marbles, ten white marbles and no other marbles. two marbles are randomly drawn from
neonofarm [45]
Since there are only 2/15 red marbles in the jar, to draw the first marble it would be a 2/15 chance, the next draw would only have 14 marbles, and only 1 red marble, giving you a 1/14 chance. Then you would just need to multiply those two together giving you 2/210, which you can simplify to 1/110
8 0
3 years ago
Look at the sets below.
Hoochie [10]

Answer:

\boxed{\bold{\boxed{ \sf{1 \: , \: 2 \: , \: 3\: ,4 \: , \: 5 \: , \: 6 \: , \: 8 \: , \: 10 \: }}}}

Option D is the correct option

Step-by-step explanation:

Let the sets be A and B.

A = { 1 , 2 , 3 , 4 , 5 }

B = { 2 , 4 , 6 , 8 , 10 }

<u>Finding </u><u>A</u><u> </u><u>union</u><u> </u><u>B</u><u> </u><u>(</u><u> </u><u>A</u><u> </u><u>∪</u><u> </u><u>B</u><u> </u><u>)</u>

<u>The</u><u> </u><u>union</u><u> </u><u>of </u><u>sets</u><u> </u><u>A</u><u> </u><u>and</u><u> </u><u>B</u><u> </u><u>is </u><u>the </u><u>set </u><u>of </u><u>all</u><u> </u><u>elements</u><u> </u><u>which</u><u> </u><u>belongs</u><u> </u><u>either</u><u> </u><u>A</u><u> </u><u>or </u><u>B</u><u> </u><u>or</u><u> </u><u>both</u><u> </u><u>A</u><u> </u><u>and</u><u> </u><u>B</u>

So, list them :

A ∪ B = { 1 , 2 , 3 , 4 , 5 , 6 , 8 , 10 }

Hope I helped!

Best regards! :D

3 0
3 years ago
Can someone help me solve this again?<br><br>By using substitution method..​
Shalnov [3]

Answer:

x = 7 and y = -2

Given:

x = 5y + 17 _____first equation

2x + 3y = 8 ____second equation

Steps:

2x + 3y = 8

<em>plug in x = 5y + 17 into second equation</em>

<em></em>

2(5y + 17)+3y = 8        [ open the brackets ]

10y + 34 + 3y = 8

10y + 3y = 8 - 34        [ collect and group terms ]

13y = -26                    [ divide both sides by 13 ]

y = -2                          [ final answer ]

solve for x:

x = 5y + 17

x = 5(-2) + 17

x = 7

6 0
2 years ago
Read 2 more answers
4 cents per day equals blank dollars per day
Oksana_A [137]
.04 dollars per day is what it eqqualz
3 0
4 years ago
I’m so confused on how to do it
Monica [59]

Answer:

785.4

Step-by-step explanation:

The formula to find the surface area of a cylinder is

2* pi* radius* height + 2* pi* 2radius.

2( 3.14) (5) (20)= 628

2 (3.14* 5*5)= 157

628+ 157= 785.

8 0
3 years ago
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