Hi,
Welcome to GMAT Club and congratulations on your first post!
The correct answer for m09-24 is E. You're wrong about the mean of consecutive odd integers being 5 all the time. As you might know, the mean is found by summing up all numbers and dividing by the number of elements in a set. So, the mean for set (1, 3, 5, 7, 9) will equal \(\frac{1+3+5+7+9}{5}=5\). However, for set (5, 7, 9, 11, 13) the mean will equal \(\frac{5+7+9+11+13}{5}=9\). I hope it helps.
In future, before posting another question in this forum, please read this post of mine:
please-read-this-before-posting-71350.htmlIf you can't find the discussions you need using the methods outlined in the post above, feel free to start a new topic in this forum.
Thank you for cooperation
.
sophanu wrote:
I thought the answer to question 24 of m09 test is C not E. Am I missing something here.
AFAIK the mean of consecutive odd numbers should be same no matter how big or how small the number are, they are always 5.