How many such letters are there in the arrangement each of which is either immediately preceded by a symbol or immediately followed by a number, but not both ?

🎲 Try a Random Question  |  Total Questions in Quiz: 193  |  🧠 Study this quiz with Flashcards
This question is part of a full practice quiz:
WBPSC Previous Year Question Papers 2019 — practice the complete quiz, review flashcards, or try a random question.


How many such letters are there in the arrangement each of which is either immediately preceded by a symbol or immediately followed by a number, but not both ?