Jawabanmu

2014-05-06T19:27:24+07:00
2014-05-06T19:34:00+07:00
A. P =  \frac{1}{f}
 20 =  \frac{1}{f}
 20f = 1
 f =  \frac{1}{20}

b. M =  \frac{Sn}{f} + 1
 =  \frac{25}{1/20} + 1
 =  500 + 1
 = 501 kali