Posted by purple on .
A box contains two dimes and four quarters. What is
the expected value of a single draw of one coin under
the assumption that one cannot distinguish between the
coins on the basis of size?
can you please explaing for elementery students

math 
PsyDAG,
There are 6 coins. Therefore the probability of 10¢ = 2/6 = 1/3 and the probability of 25¢ = 4/6 = 2/3.