Posted by edsel on Tuesday, January 14, 2014 at 9:06pm.
20 students are in a classroom. if students leave randomly, the probability that the first student to leave the classroom is a girl is 3/5. How many girls are there?

math  PsyDAG, Wednesday, January 15, 2014 at 11:26am
3/5 * 20 = ?

math  harini, Monday, November 16, 2015 at 8:08am
12

math  harini, Monday, November 16, 2015 at 8:09am
120
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