Yahoo Answers: Answers and Comments for A scrabble tray contains the tiles FERSXAI. How many different fourletter arrangements can be made? [Mathematics]
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enAU
Thu, 12 Feb 2009 19:41:42 +0000
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Yahoo Answers: Answers and Comments for A scrabble tray contains the tiles FERSXAI. How many different fourletter arrangements can be made? [Mathematics]
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From ?: a million. 6 letters ferias • fixers • fraise ...
https://au.answers.yahoo.com/question/index?qid=20090212194142AAnVS6r
https://au.answers.yahoo.com/question/index?qid=20090212194142AAnVS6r
Mon, 17 Oct 2016 11:06:00 +0000
a million. 6 letters ferias • fixers • fraise • 5 letters Aesir • afire • AFISR • Aries • upward thrust up • festivals • fares • Farsi • faxes • fears • feria • fires • fixer • fixes • fries • enhance • safer • Serax • serif • sixer • 4 letters upward thrust • fireplace • Sire • Airs • honest • Fare • worry • Arie • Firs • riskfree • Sers ....Thats all i might desire to discover OMFG! i did no longer examine your question to the tip! it is little need for you and that i spent 20 minutes of my existence! LOL

From ?: 1. Order is important, so we use permutations....
https://au.answers.yahoo.com/question/index?qid=20090212194142AAnVS6r
https://au.answers.yahoo.com/question/index?qid=20090212194142AAnVS6r
Thu, 12 Feb 2009 19:56:38 +0000
1. Order is important, so we use permutations. Since there are no repeated letters, the answer is simply 7P4 = 840
2. 10C2 * 12C3 = 45 * 220 = 9900
3. Assuming every person gets exactly one sundae. We simply need to find the permutation of the 9 sundaes. Normally this is 9!, but with repeats, we need to divide out the indistinguishable permutations of the 3, 4 and 2 identical sundaes. The answer is thus:
9! / (3!4!2!) = 1260
4. 26 * 26 * 10 * 10 * 10 = 676000