Question
Mathematics Question on permutations and combinations
Find out the rank of MONDAY in English dictionary if all alphabets are arranged in order?
Answer
The correct answer is 327.
∴ Rank = (2×5!+3×4!+2×3!+1×2!)+1
= 240+72+12+2+1
= 327
Find out the rank of MONDAY in English dictionary if all alphabets are arranged in order?
The correct answer is 327.
∴ Rank = (2×5!+3×4!+2×3!+1×2!)+1
= 240+72+12+2+1
= 327