When calculating probability, we are comparing the number of favorable outcomes to the number of possible outcomes. To calculate the probability that a randomly chosen coin is not a quarter we will use the Probability Formula.
P=Favorable Outcomes/Possible Outcomes
In the jar, there is a total of 37 pennies, 53 nickels, 29 dimes, and 21 quarters. The sum of these values is the number of possible outcomes.
37+53+29+ 21= 140 coins
Out of these, 21 are quarters, which is the number of not favorable outcomes.
Now, we have to calculate how many out of these coins are not quarters.
37+53+29= 119 not quarters
Out of all coins in the jar, 119 are not quarters, which is the number of favorable outcomes. Now we have enough information to calculate P(Not Quarter).
