# Coin Combination Probability

Suppose you have 50 American coins totaling exactly $1. This includes at least one quarter, and may contain nickels, dimes, and/or pennies.

If you drop a coin at random, what is the probability that it is a penny?

https://brainmass.com/math/linear-algebra/coin-combination-probability-445817

#### Solution Summary

Step-by-step solution for solving an under-determined system of equations, using a table of values and then determining the probability.

$2.19