answersLogoWhite

0


Best Answer

There are 6 unique combinations of 2 colors.*

The total number of pairs is 12, but there are 6 that are the same pairs.

The formula would be (n)(n-1)/2 where n = 4 and 2 is the number of units

If pairs can include the same color twice, you have 10 possibles.

If pairs in different order are counted, you have 12 possibles

If pairs in different order and the same color twice, you have 16 possibles.

*[for four colors ABCD, unique pairs are AB AC AD BC BD CD]

---

Take the 4 colors Red, Green, Blue, & Yellow, and label them R G B & Y.

Some assumptions need to be made to answer this. If order does not matter (Reg-Green is same as Green-Red), and double colors are allowed (example Red-Red is allowed), then it is 10. (RR, GG, BB, YY, RG, RB, RY, GB, GY, BY). Notice that I assumed that GR and RG are the same.

If double colors are not allowed, and order doesn't matter, then eliminate the 4 doubles and the answer is 6.

If doubles are allowed, and order matters (RG and GR are 2 separate combinations), then answer is 16.

If order matters and no doubles, then 12.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How many ways 2 color combination out of 4 colors?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Math & Arithmetic

Are black white and gray colors?

Let's deal with a complete question. What are black, white and gray? Black is the absence of all color. White is the presence of all colors in equal amounts. Gray is made up in many ways. Each primary color and its opposite, black and white, or the combination of primary or secondary colors can make variations of gray.


How do I solve this math problem?

There are a total of ? ways of painting the cards. Each of the four cards can be painted four ways. There's no rules against them all being the same color or all different colors, so the only thing that matters is that there are four cards and four colors. So the first can be any of four colors, and for each of those the second card can be any of four colors, so on and so forth. 4 * 4 * 4 * 4 = 256 total ways of painting the cards. There are ? ways of painting them using all four colors. Let's assume that the order we paint them in doesn't matter. The first card can be painted 4 colors. The second card can't be painted an already used color, so there are only 3 options remaining. The next card only has two options, and the last card has 1. 4 * 3 * 2 * 1 = 24 ways of painting the cards using every color. There are ? ways of painting two cards red, one card black, and one card blue. We're going to work a little backwards on this one, since the relevant information is which card is given to which color. So two cards need to be red, but crucially the first one can be any card, and the second one only has three remaining options. The black card can be any of the two remaining cards, and the blue card has only one choice left at that point (no matter which card we choose for black). Again, the equation that we come up with 4 * 3 * 2 * 1, although we arrived at it from a different angle. Effectively, there will always be 24 ways of creating a specific combination of colors, we've just arbitrarily changed which specific set we're selecting for. There are ? ways of painting the four cards using three colors. The first card can be any of the four colors. The second card can be any of three colors, not matching the first. The third can can be any remaining color. Since we have four cards and three colors, the last card must match one of the cards we've already painted, and therefore the last card has 3 choices. 4 * 3* 2 * 3 = 72 There are ? ways of painting them using two colors. Similar to the last one, the first card can be any of four, but we'll make the second one a different color. The last two cards can each be either of the colors we've already used, so they each have two options. 4 * 3 * 2 * 2 = 48


In how many ways can 4 shirts of different colors be arranged in a shelf?

4 x 3 x 2 different ways, ie 24


How many ways can you make 1 using any combination of quarters nickels and dimes?

5.


How many ways can you arrange eight colors of towels on a shelf?

8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 = 40,320 ways !

Related questions

Why does the color white occur?

There are two ways that the color white occurs, as light and as the color of an object. When you see white light it is a combination of many colors of light, because white light is a combination of all light. When you see a white object, that object is reflecting all of the colors of light back at you, because that surface doesn't absorb any of the colors of light.


How many ways 2 color combinations out of 6 colors?

12 Combinations.


Are black white and gray colors?

Let's deal with a complete question. What are black, white and gray? Black is the absence of all color. White is the presence of all colors in equal amounts. Gray is made up in many ways. Each primary color and its opposite, black and white, or the combination of primary or secondary colors can make variations of gray.


What is a hue?

A hue refers to the attribute of a color that allows it to be classified as red, blue, green, or any other distinct color. It is one of the main characteristics that differentiate one color from another in the color spectrum.


How do you decide on a color palette for a room?

There are many ways to decide on a color palette for a room. Many people chose favorite colors, for example with childrens rooms. Others tend to go with a theme, or base it off favorite colors. Some people simply choose colors that will brighten an otherwise dark room.


If you have six colors how many ways can you pair the colors?

15


What color is formed when all the colors of light are combined?

white you could think none but they are all ways a color no mater what.


How many ways can you spell color?

Two ways. Colour Color = american way.


Which bandana colors have not yet been used?

All colors have been used in many ways.......


What is the color of freindship?

well its a movie but its also a saying that's is friedship comes in all different ways and "colors"


What are some ways I can make my luggage stand out so it's easy to find?

You should buy bright colors luggage like the color red or the color yellow.


How do you add color to a slide?

To be honest there are many ways to add color to a slide