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3 years ago

The right answer please

Mathematics

2 answers:

chubhunter [2.5K]3 years ago

7 0

The 4 th is the correct answer

liraira [26]3 years ago

3 0

4th one brother. Pretty sure

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An urn contains 12 balls, of which 4 are white.

wel

Answer:

a) $\frac{1}{3}$

b) $\frac{4}{12}\,,\,\frac{4}{11}\,,\,\frac{4}{10}\,,...$

Step-by-step explanation:

Number of balls in the urn = 12

Number of white balls in the urn = 4

So, number of balls which are not white = 12 - 4 = 8

We know that probability = No. of outcomes/Total number of outcomes

Let $A_i\,,\,B_i\,,\,C_i$ denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

Probability = Number of white balls/Total number of balls

Solution: $P(A_i)=P(B_i)=P(C_i)=\frac{4}{12}=\frac{1}{3}$

b)the balls that are withdrawn are not replaced.

Solution:

If A wins: $P(A_1)=\frac{4}{12}=\frac{1}{3}$

If A lost and B wins: $P\left ( B_1|A_1^{c} \right )=\frac{4}{11}$

If A and B lost and C wins: $P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}$

and so on....

4 0

4 years ago

I need help. Please explain the answer. Thanks!

zmey [24]

Answer:

1.25> okay your welcome

5 0

3 years ago

PLEASE HELP ME WITH THIS!! ;(

DochEvi [55]

Answer:

Zoom in and mark me as brainliest

4 0

3 years ago

Which is equivalent to 2 5/6 A. 5/3 B. 7/6 C. 17/6 D. 12/5

Dimas [21]

The answer would be C (17/6)
This is because;
6 goes into 17 twice leaving a reminder of 5.

8 0

3 years ago

Read 2 more answers

A piece of wire 5 m long is cut into two pieces. one piece is bent into a square and the other is bent into an equilateral trian

laiz [17]

They should use 5 meters of tape since u syarted off but now u will use 2 and a half of wire i mean wire

6 0

4 years ago