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Units digits, exponents, remainders problems

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Units digits, exponents, remainders problems [#permalink]

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Units digits, exponents, remainders problems



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This post is a part of the Special Questions Directory focusing on Quant topics traditionally neglected and not covered by conventional sources but still tested on the GMAT. Many of these are above average difficulty questions

Find below links to units digits, exponents, remainders, cyclicity problems.

Problem Solving:


650+


what-is-the-tens-digit-of-127023.html
if-you-divide-7-131-by-5-which-remainder-do-you-get-83350.html
if-n-is-a-positive-integer-what-is-the-remainder-when-105067.html
what-is-the-unit-s-digit-of-101015.html
if-n-is-a-positive-integer-what-is-the-remainder-when-96262.html
what-is-the-remainder-when-3-243-is-divided-by-141050.html
find-the-ones-digit-of-141071.html
m12-72970.html
if-a-and-b-are-positive-integers-and-x-4-a-and-y-9-b-which-of-the-187301.html

700+


when-51-25-is-divided-by-13-the-remainder-obtained-is-130220.html
m25-73474.html
which-of-the-following-numbers-is-prime-168179.html
what-is-the-remainder-when-43-86-is-divided-by-134778.html
what-is-the-remainder-when-43717-43628232-is-divided-by-154889.html
if-n-33-43-43-33-what-is-the-units-digit-of-n-140037.html

750+


what-is-the-units-digit-of-126681.html
what-is-the-remainder-of-126493.html
what-is-the-remainder-when-32-32-32-is-divided-by-100316.html
algebra-m26-145109.html
what-is-the-remainder-when-333-222-is-divided-by-156379.html
what-is-the-remainder-when-18-22-10-is-divided-by-99724.html


Data Sufficiency:


600+


if-k-is-a-positive-integer-what-is-the-reminder-when-2-k-126478.html
if-r-s-and-t-are-all-positive-integers-what-is-the-remainder-of-2-p-187298.html

650+


if-x-is-a-positive-integer-is-the-remainder-0-when-3-x-109075.html
if-243-x-463-y-n-where-x-and-y-are-positive-integers-102054.html
if-r-s-and-t-are-all-positive-integers-what-is-the-136746.html
if-x-and-y-are-positive-integers-and-n-5-x-7-y-15-what-is-the-187302.html

700+


tough-and-tricky-exponents-and-roots-questions-125967.html#p1029239
if-x-and-y-are-positive-integers-what-is-the-remainder-when-109636.html

Theory on Number Properties: math-number-theory-88376.html

All DS Number Properties Problems to practice: search.php?search_id=tag&tag_id=38
All PS Number Properties Problems to practice: search.php?search_id=tag&tag_id=59

Theory on remainders problems: remainders-144665.html

All DS remainders problems to practice: search.php?search_id=tag&tag_id=198
All PS remainders problems to practice: search.php?search_id=tag&tag_id=199

Theory on Exponents: math-number-theory-88376.html

All DS Exponents questions to practice: search.php?search_id=tag&tag_id=39
All PS Exponents questions to practice: search.php?search_id=tag&tag_id=60

Tough and tricky DS exponents and roots questions with detailed solutions: tough-and-tricky-exponents-and-roots-questions-125967.html
Tough and tricky PS exponents and roots questions with detailed solutions: tough-and-tricky-exponents-and-roots-questions-125956.html

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Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


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Re: Units digits, exponents, remainders problems [#permalink]

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Re: Units digits, exponents, remainders problems [#permalink]

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New post 05 Apr 2016, 08:09
a very good post. bumping for others.

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Re: Units digits, exponents, remainders problems [#permalink]

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New post 09 Apr 2017, 06:57
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
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Kudos [?]: 288 [0], given: 0

Re: Units digits, exponents, remainders problems   [#permalink] 09 Apr 2017, 06:57
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