In how many ways the letters of the word daughter can be arranged such that vowels are together
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v=3
c=5
repatation is allowed
3×3×3×5×5×5×5×5
84375
repatation is not allowed
3×2×1×5×4×3×2×1
720
c=5
repatation is allowed
3×3×3×5×5×5×5×5
84375
repatation is not allowed
3×2×1×5×4×3×2×1
720
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