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 GMAT 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:
Lets write few number which will have remainder 1 when divided by 3 1,4,7,10,13,........,49 so this series in AP so to get total number nth term =first term +(N-1)d 49=1+(N-1)*3 Hence total number will be 17.
As per question, we get x=3q+1 So, the set x has (1,4,7,....,49). We want the total number count in this set. If you notice, this looks like an AP, with common difference (d)= 3 and first term (a1) as 1.
How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3 ?
A. 15 B. 16 C. 17 D. 18 E. 19
Algebraic way:
Integer have a remainder of 1 when divided by 3 implies \(n=3p+1\), where \(p\) is an integer \(\geq{0}\), so \(n\) can take the following values: 1, 4, 7, ...
\(n=3p+1\leq{50}\);
\(3p\leq{49}\);
\(p\leq{16\frac{1}{3}}\)
Hence, \(p\), can take 17 values from 0 to 16, inclusive.