(2) we divide 29ª! 5 29247 the remainder obtained will be y 10 there the unit digit' Now,

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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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If we divide 29²4!5
29247
the remainder obtained will be
by 10
there
unit digit'
the
Now,
29 = -1 mod (10)
=>
247
29
= (-1)247
mod (10)
=>
२१२१
-I mod (10)
also,
- 5 = 5 mod (10)
247
29 -5 = -1+5 mod (10)
249
29
-5 = 4 mod (10)
unit digit is
Transcribed Image Text:If we divide 29²4!5 29247 the remainder obtained will be by 10 there unit digit' the Now, 29 = -1 mod (10) => 247 29 = (-1)247 mod (10) => २१२१ -I mod (10) also, - 5 = 5 mod (10) 247 29 -5 = -1+5 mod (10) 249 29 -5 = 4 mod (10) unit digit is
2. What is the units digit of 2947 - 5?
Transcribed Image Text:2. What is the units digit of 2947 - 5?
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