BITSAT2016MathematicsPermutation and CombinationActual
All the words that can be formed using alphabets A, H, L, U and R are written as in a dictionary (no alphabet is repeated). Rank of the word RAHUL is
Options
- A71
- B72
- C73
- D74
Correct answer
D. 74
Step-by-step solution
No. of words starting with A are 4 !=24 No. of words starting with H are 4 !=24 No. of words starting with L are 4 !=24 These account for 72 words Next word is RAHLU and the 74^ th word RAHUL