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How many different three-letter initials can people have?
Michellecadorna
first space filled with A-z this implies that n(first)=26.
second space filled with all letters from a-z this implies that n(second)=26.
third space filled with all letters from a-z this implies that n(third)=26.
therefore by principle of counting
26x26x26=17576
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∙ 12y ago
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How many different five-letter initials with none of the letters repeated can people have?
There are 26*25*24*23*22 = 7,893,600 sets of initials.
How many different two-letter initials with none of the letters repeated can people have?
26*25 = 650
How many people around the world share the same birthday as you?
A person shares their birthday with at least nine million different people around the world.
How many different three member committees can be formed from a group of twenty-five people?
There are 2300 possible combinations.
How many different four-letter initials are there that begin with A?
26^3. There are 26 possible letters, so that is why we multipy by 26. Because there are 4 positions, and the first is taken with "A", that only leaves 3 positions left. As there are 26 possible letters in each position, you multiply by 26 three times, or, 26 to the third power.
How many different five-letter initials with none of the letters repeated can people have?
There are 26*25*24*23*22 = 7,893,600 sets of initials.
How many different two-letter initials with none of the letters repeated can people have?
26*25 = 650
How many different three-letter initials are there that be- gin with an A?
There are 676.
How many different 3 letter initials with none of the letter repeated can people have?
26 x 25 x 24 = 15,600
How many different 3 letter-initials with none of the letters repeating can people have?
26 x 25 x 24 = 15,600
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