Question

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

Answer 1

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