Besides the 'G' there are 7 other letters. So they can be arranged in
7 x 6 x one x 5 x 4 x 3 x 2 x 1 = 5040 ways.
The letters of the word "ORGANISM" can be arranged in 5040 different ways with "G" fixed in the third position. This is calculated by arranging the remaining 7 letters using factorial notation. Therefore, the total arrangements are 7!, which equals 5040.
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