The number of positive odd divisors of 216 is

The number of positive odd divisors of 216 is
  1. $4$
  2. $6$
  3. $8$
  4. $12$

Solution

The factors of $216=2^3 \cdot 3^3$ The odd divisors are the multiple of 3. $\therefore$ The number of divisors $ =3+1=4 $

Asked in: AP EAMCET 2004

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