ejazzy wrote:I just realized that there are no explanations to the answers on the official MBA.com practice tests. (BUMMER!) I want to make sure I learn everything I have gotten wrong fully, so that I will be at ease if I see the problems come test day.
The correct answer is (C) by the way. Can anyone help to explain why this is so?
A little about me: I'm just starting out on my studying for the test. This was my first practice test and I scored a 560. I plan to bring this up above 700 in the next two months.
Thanks in advance!
The formula indicates that the distance between one term and the next -- the INTERVAL -- is 3.
The result is a sequence of EVENLY SPACED INTEGERS.
To count evenly spaced integers:
Total number of integers = (biggest - smallest)/interval + 1.
In the problem at hand:
Biggest = 23
Smallest = -4
Interval = 3
Total number of integers = (23 - (-4))/3 + 1 = 10.
Thus, t(n) is the 10th integer in the sequence.
The correct answer is
D.
We also should know how to determine the SUM of evenly spaced integers. Check my post here:
https://www.beatthegmat.com/for-any-posi ... tml#361604
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