Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized for You
we will pick new questions that match your level based on your Timer History
Track Your Progress
every week, we’ll send you an estimated GRE score based on your performance
Practice Pays
we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Your score will improve and your results will be more realistic
Is there something wrong with our timer?Let us know!
The ISB MBA application process is no great mystery. It is still a challenge to understand who really does get into ISB. Explore responses to top questions about applying successfully to ISB with ISB admission consultant at GOALisB.
R1 deadlines are coming soon. Which standardized test should you take—the GRE or the GMAT? In this webinar, we’ll cover all the key differences, so you can make an informed decision that’s right for you
In sequence Q, the first number is 3, and each subsequent nu
[#permalink]
30 Jul 2018, 10:16
Expert Reply
00:00
Question Stats:
83% (01:07) correct
16% (01:32) wrong based on 31 sessions
HideShow
timer Statistics
In sequence Q, the first number is 3, and each subsequent number in the sequence is determined by doubling the previous number and then adding 2. In the first 10 terms of the sequence, how many times does the digit 8 appear in the units digit?
Re: In sequence Q, the first number is 3, and each subsequent nu
[#permalink]
31 Jul 2018, 06:59
1
From the question stem: The first term is 3 The second term is 3*2 + 2 = 8 The third term is 8*2 + 2 = 18
We can see that when the unit digit 8 is multiplied by 2 it ends with 6 and when 2 is added it becomes 8 hence all the terms except the first have their units digit as 8. In total there are 9 such terms
_________________