How many Sylow 3-subgroups of S5 are there? Exhibit five.

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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How many Sylow 3-subgroups of S5 are there? Exhibit five.

Expert Solution
Step 1

To find the Sylow 3-subgroup of S5.

 

Step 2

Suppose that H be a Sylow group of S5.

Therefore,

    Order of S5=S5

                       =5!=120=3·40.

So, 

                    H=3.

This implies that H is cyclic and H contains two elements of order 3.

Let 't' be the number of Sylow 3-subgroups. Then there are '2t' elements

of order 3 in these Sylow 3-subgroups.

Since any element of order 3 generates a group of order 3.

This implies that any element of order 3 is contained in some Sylow 3-subgroup.

Then the number of elements of order 3 in S5 is '2t'.

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