1 . what is the remainder when 128^500 is divided by 153?
I understood till
Euler number of 153 is 96 so the number reduces to 128^20
153 = 17 * 9
Now he says..
17 leaves a remainder of 16 and 9 leaves a remainder of 4
17A+16= 9B + 4
How exactly did he come to that conclusion ??
2.(36^41) mod 7 = 1 ?? how
(36^41) mod 11 = 3 ?? how again
i understand mod is %.. but am unable to work it out
please help !
Help with these kinds of questions !
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Ajax12 wrote:1 . what is the remainder when 128^500 is divided by 153?
I understood till
Euler number of 153 is 96 so the number reduces to 128^20
153 = 17 * 9
Now he says..
17 leaves a remainder of 16 and 9 leaves a remainder of 4
17A+16= 9B + 4
How exactly did he come to that conclusion ??
2.(36^41) mod 7 = 1 ?? how
(36^41) mod 11 = 3 ?? how again
i understand mod is %.. but am unable to work it out
please help !
The theorems that are supportive in solving such kind of problems are:
1. Euler's Theorem
2. Fermat's Little Theorem
3. Wilson's Theorem
4. Chinese Remainder
All of these theorems are out of scope for GMAT. Even then if the curiosity is there; please post it in GMAT Math sub forum to know more about that. Serious GMAT aspirants may please ignore this thread. This page will be useful: https://www.math-help-ace.com/Elementary ... heory.html
The mind is everything. What you think you become. -Lord Buddha
Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001
www.manyagroup.com
Sanjeev K Saxena
Quantitative Instructor
The Princeton Review - Manya Abroad
Lucknow-226001
www.manyagroup.com