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For n ε Z, Let nZ= {nk : k ε Z}. Then the number of units of Z/11Z and Z/12Z, respectively, are
  • a)
    11,12
  • b)
    10, 11
  • c)
    10, 4
  • d)
    10, 8
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
For n ε Z, Let nZ= {nk : k ε Z}. Then the number of un...

Number of units of Z11 = φ(11) = 10.
Again 
Number of units of Z12 = φ(12) = 4
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Most Upvoted Answer
For n ε Z, Let nZ= {nk : k ε Z}. Then the number of un...

Number of units of Z11 = φ(11) = 10.
Again 
Number of units of Z12 = φ(12) = 4
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Community Answer
For n ε Z, Let nZ= {nk : k ε Z}. Then the number of un...

Number of units of Z11 = φ(11) = 10.
Again 
Number of units of Z12 = φ(12) = 4
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