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How can you guarantee success of picking a matching pair?
To ensure a matching pair you need to add 1 more sock. If the first 2 were the same color, you have a pair. If the first 2 were different colors, the 3rd sock will match one of the first 2. So with 3 socks, you are guaranteed that at least 2 of them will be the same color.
How many number must be selected from the set?
| Q. | How many numbers must be selected from the set {1, 2, 3, 4} to guarantee that at least one pair of these numbers add up to 7? |
|---|---|
| B. | 5 |
| C. | 9 |
| D. | 24 |
| Answer» b. 5 |
What does 2 pack of socks mean?
It means 2 pairs, 4 socks altogether. Jocelyn McKim.
How many socks should you have in your sock drawer?
If you reach into your sock drawer without looking, how many socks would you have to pull out to find a matching pair if you had 10 red socks 10 blue socks, and 10 green socks? A minumum of two, and a maximum of four.
How many socks can you pull out at a time?
A minumum of two, and a maximum of four. The first sock you pull will be red, blue, or green. You will have one sock of that colour, you must pull a second one. The second will be either red, blue or green. There are two chances it will not match your first sock (probability 0.67) and one it will.
How many pairs of socks should I get to match?
It’s either red or green and now you have at least two of the same color. You only need to take three out, then you guarantee you get a pair the same colour. You will either get three the same colour or two one colour and one another colour. That’s the only combination that can happen so three is a safe number for matching socks.
What is the minimum number of socks to make a color?
Here, N is 2, so N+1=3 is that minimum. No matter whether you have 2 blue socks and 2 red ones, or 500 million blue socks and 3 red ones. If you have at least two of at least one color, and at least one of each additional color, then N+1 will always be the answer.