1. 810
  2. 1440
  3. 2880
  4. 50400
  5. 5760

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Answer: Option 4

In the word 'CORPORATION', we treat the vowels OOAIO as one letter. Thus, we have CRPRTN (OOAIO). This has 7 (6 + 1) letters of which R occurs 2 times and the rest are different. Number of ways arranging these letters = $$\frac{{7!}}{{2!}}$$ = 2520 Now, 5 vowels in which O occurs 3 times and the rest are different, can be arranged in $$\frac{{5!}}{{3!}}$$ = 20 ways ∴ Required number of ways = (2520 x 20) = 50400

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