3. What is the remainder when 5! 25! Is divided by 31?

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter11: Rational And Irrational Numbers
Section11.8: Adding And Subtracting Radicals
Problem 3E
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Kindly explain in words the problem and solution shown in the picture.

5 = -26 mod (31)
-2न mo d (31)
3 = - 28 mod (31)
- 29
mod (31)
-30 mad (31)
If
9 E6 mad (m) and
C =d mod (m)
then
ac E bd mod (m)
So,
5.4.3. 2.) = (26)(-27)(-28) (-29)(-30) mod 31
> 5! E(u20)(27)(2s)(29) (30) mad(31)
=>
» 5. 25! =H°(30! mod (31)
125, = 25! mod
= 25! mod (31)
From wilsons Theorem. pis
prime then,
(P-1)! = -1 med (P)
is prime
31
30! = -1 mod (31)
Hence ,
= fIjo (-+) mod(31)
5,25!
Transcribed Image Text:5 = -26 mod (31) -2न mo d (31) 3 = - 28 mod (31) - 29 mod (31) -30 mad (31) If 9 E6 mad (m) and C =d mod (m) then ac E bd mod (m) So, 5.4.3. 2.) = (26)(-27)(-28) (-29)(-30) mod 31 > 5! E(u20)(27)(2s)(29) (30) mad(31) => » 5. 25! =H°(30! mod (31) 125, = 25! mod = 25! mod (31) From wilsons Theorem. pis prime then, (P-1)! = -1 med (P) is prime 31 30! = -1 mod (31) Hence , = fIjo (-+) mod(31) 5,25!
3. What is the remainder when 5! 25! Is divided by 31?
Transcribed Image Text:3. What is the remainder when 5! 25! Is divided by 31?
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