What's the remainder of 7^20/17?

Asked by Last Modified  

2 Answers

Follow 2
Answer

Please enter your answer

Trainer

The remainder is 4
Comments

CAT/GMAT/Bank PO/Civil Services Expert

7^20 = 7^16 * 7^4 According to Fermat's little theorem 7^16 when divided by 17, the remainder is 1. Now the number is reduced to 1*7^4 7^4 = 49*49=15*15=225 When 225 is divided by 17, the remainder is 4.
Comments

Related Questions

How to improve quantitative aptitude?
Solve more and more problems or better get trained by a qualified trainer.
Vijay
HI. I am devansh from Masab tank are , Hyderabad .. I need a good high level quant aptitude and reasoning tutor near 4 km in my vicinity.
Hi Devansh I am Rajesh..I am ready teach u quant aptitude and reasoning but I wont to know some details what u are studying and which purpose u need this example(for bank exams or cat exam )..if u need any details contact mee..
Devansh
0 0
7

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons




How to solve a maths questions
Always use simple and easy fastest steps to solve a problem . As each questtion involves simple basic calculation like Addition,Subtraction , Multiplication , Division . Dont go for all calculation using...

Three Digit Multiplication Shortcut
1) 123*456 I II III 1 2 3 4 5 6 Multiply column III. Here, it's 18. Write 8 and carry over 1. Result=>__8 Cross multiply column II and III diagonally. ie 2*6 and 3*5. We get 12...

Looking for Quantitative Aptitude Coaching?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you