Groups of units U(n) under multiplication modulo n

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Please make a small correction in this video. At 3.32 I have told that the GCD(8, 12) = 2. But this is wrong. The GCD(8, 12)=4.
Because divisors of 12 are 1, 2, 3, 4, 8, 12. And 4 >2. Therefore greatest common divisors of 8 & 12 is 4.

shrikanthck
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Good concept delivered by you ..please make more videos on group theory

AnkitKumar-xvgc