10!/(3!3!2!) = 50,400
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Inferential Statistics
If the books have to be the correct way up and spine outwards: 7! ways =7x6x5x4x3x2x1 =5040 ways. If the books can be any way in (upside down, spine inward, etc.): (7!x4^7) ways =7x4x6x4x5x4x4x4x3x4x2x4x1x4 =82,575,360 ways
The three points on a line form ONE line; the fourth point forms THREE additional lines, one with each of the first three points. So, four in total.
An analogy is a relationship between two words. Then, a third word is given to find a a word that is related to the third word in the same way the first two words are related.
...representing something. an analogy is a way of describing something using something else, like a simile.