Question

what is principle of counting

Answer 1

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PRINCIPAL OF COUNTING:- The Fundamental Counting Principle (also called the counting rule) is a way to figure out the number of outcomes in a probability problem. Basically, you multiply the events together to get the total number of outcomes.

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Answer 2

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Fundamental Counting Principle (The Multiplication Counting Rule): How to use it

Probability and Statistics > Probability > Fundamental Counting Principle

Fundamental Counting Principle Definition.

fundamental counting principleThe Fundamental Counting Principle (also called the counting rule) is a way to figure out the number of outcomes in a probability problem. Basically, you multiply the events together to get the total number of outcomes. The formula is:

If you have an event “a” and another event “b” then all the different outcomes for the events is a * b.

Fundamental Counting Principle Examples.

Fundamental counting principle: Sample problem #1

A fast-food restaurant has a meal special: $5 for a drink, sandwich, side item and dessert. The choices are:

Sandwich: Grilled chicken, All Beef Patty, Vegeburger and Fish Filet.

Side: Regular fries, Cheese Fries, Potato Wedges.

Dessert: Chocolate Chip Cookie or Apple Pie.

Drink: Fanta, Dr. Pepper, Coke, Diet Coke and Sprite.

Q. How many meal combos are possible?

A. There are 4 stages:

Choose a sandwich.

Choose a side.

Choose a dessert.

Choose a drink.

There are 4 different types of sandwich, 3 different types of side, 2 different types of desserts and five different types of drink.

The number of meal combos possible is 4 * 3 * 2 * 5 = 120.

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