The arithmetic mean of the numbers 9, 12, 15, 18, 20, 22 is increased by 1, if 15 is replaced by

🎲 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.


The arithmetic mean of the numbers 9, 12, 15, 18, 20, 22 is increased by 1, if 15 is replaced by