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Updated on: 22 Apr 2025, 01:24
Originally posted by EMPOWERgmatRichC on 18 Oct 2019, 18:10.
Last edited by Bunuel on 22 Apr 2025, 01:24, edited 2 times in total.
Last edited by Bunuel on 22 Apr 2025, 01:24, edited 2 times in total.
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After the first number in the sequence, each number in sequence T is 2.5 more than the previous number. If the average (arithmetic mean) of the set is -10, what is the median of the sequence?
(A) -25
(B) -10
(C) -8.5
(D) -4
(E) There is not enough information to answer the question.
EMPOWERgmat PS Series:
Pack 3, Question 4
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Share your explanation! The GMAT Club member with the most verified Kudos in total on the 10 question PS & DS Block 3 question packs will win an $85 EMPOWERgmat tuition credit, which will entitle the winner to a full month of complete access to the EMPOWERgmat system. Even if you're not sure about your answer or your rationale, share your explanation to help boost your learning and earn a chance to win. We have increased the contest window to 2 weeks from the posted date of the question - so that you can maximize your chances and answer all of the questions in each set!
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(A) -25
(B) -10
(C) -8.5
(D) -4
(E) There is not enough information to answer the question.
EMPOWERgmat PS Series:
Pack 3, Question 4
2 Week Window To Win An $85 EMPOWERgmat Tuition Credit (1 Month Free!)
Share your explanation! The GMAT Club member with the most verified Kudos in total on the 10 question PS & DS Block 3 question packs will win an $85 EMPOWERgmat tuition credit, which will entitle the winner to a full month of complete access to the EMPOWERgmat system. Even if you're not sure about your answer or your rationale, share your explanation to help boost your learning and earn a chance to win. We have increased the contest window to 2 weeks from the posted date of the question - so that you can maximize your chances and answer all of the questions in each set!
To be eligible, your explanation must be submitted within the 2 week window after this post was created and should explain your reasoning why the answer you chose is correct
The OA will be held until a 1 week window has lapsed.
Links to the entire list of Quant and Verbal questions can be found here: EMPOWERgmat Forum Contest!...
18 Oct 2019, 20:28
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EMPOWERgmatRichC
Let the first number be X, then the sequence is x, x+2.5, x+5, ...
So, T is an Arithmetic Progression with common difference as 2.5, and in an AP, the median and average are always equal, so median=average=-10
19 Oct 2019, 08:02
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chetan2u
But the question never tells us about the total integers in the sequance. it can only be same if there were even number of integers
