Mathematics · Permutations and Combinations
The number of permutations of the digits 1, 2, 3, ..., 7 without repetition, which neither contain the string 153 nor the string 2467, is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14944
- 24920✓
- 34896
- 44800
Correct answer
4920
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