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4 years ago

How many different three digit odd numbers can be formed from the digits 1 2 3 4?

Mathematics

1 answer:

melomori [17]4 years ago

4 0

1.) 3124

2.) 3214

3.) 3412

4.) 1432

5.) 1342

6.) 1234

7.) 1423

I hope I helped

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There are 7 acts in a talent show.

lara31 [8.8K]

Answer:

Event A: 1/35

Event B: 1/840

Explanation:

Event A

For the event A, the order of the first 4 acts does not matter.

The number of different four acts taken from a set of seven acts, when the order does not matter, is calculated using the concept of combinations.

Thus, the number of ways that the first four acts can be scheduled is:

$C(m,n)=\dfrac{m!}{n!(m-n)!}$

$C(7,4)=\dfrac{7!}{4!(7-4)!}=\dfrac{7!}{4!(3)!}=35$

And the number of ways that four acts is the singer, the juggler, the guitarist, and the violinist, in any order, is 1: C(4,4).

Therefore the probability of Event A is:

$P(A)=1/35$

Event B

Now the order matters. The difference between combinations and permutations is ordering. When the order matters you need to use permutations.

The number of ways in which four acts can be scheculed when the order matters is:

$P(m,n)=\dfrac{m!}{(m-n)!}$

$P(m,n)=\dfrac{7!}{(7-4)!}=P(m,n)=\dfrac{7!}{4!}=840$

The number of ways the comedian is first, the guitarist is second, the dancer is third, and the juggler is fourth is 1: P(4,4)

Therefore, the probability of Event B is:

$P(B)=1/840$

7 0

4 years ago

How do you put q fraction into a decimal

mafiozo [28]

It all depends on the fraction.

1/2=.5 because half of 1 is .5 and half can be represented as 2

8 0

3 years ago

-2x-y=-5 In slope intercept form please! :)

schepotkina [342]

Answer:

-2x - y = -5 in slop intercept form would be y = -2x + 5

Step-by-step explanation:

-2x - y = -5

first add -2x to the left side to move it to the right side because whatever you do to one side u do to the other.

-y = -5 + 2x

divide by -1 on the whole equation

y = -2x + 5 is your answer.

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3 years ago

What is the solution to the equation 19 = r/3

netineya [11]

Answer:

the answer to the question is 57.... please give me brainliest

Step-by-step explanation:

$19 =r \div 3 \\ 19 \times 3 = r \div 3 \times 3 \\ 57 = r \\ therefore \\ r = 57$

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3 years ago

What operation is implied between the whole number and fraction parts of the mixed number 4 2/3

agasfer [191]

Answer:

Step-by-step explanation:

7 0

3 years ago