60 words can be made using all the letters of the word BHBJO, with or without meaning. If these words are written as in a dictionary, then the 50th word is:
- OBBJH
- HBBJO
- OBBHJ
- JBBOH
Answer
(1) OBBJH
Solution
Letters in dictionary order: B, B, H, J, O
Starting with B: 4! = 24 words 24
Starting with H: 4!2! = 12 words 36
Starting with J: 4!2! = 12 words 48
Starting with O: 49th word OBBHJ, 50th word OBBJH
Answer: (1)