The Sacred 3 of Detective StoriesThe Sacred 3 of Detective Stories

1. MEANS

2. MOTIVE

3. OPPORTUNITY

The Syllogism- formal argument consisting of a major and a minor premise of

a conclusion.

Sherlock Holmes

What can you conclude “It is customary for pawnbrokers in England,

when they take a watch to scratch the numbers of the ticket with a pin-point upon the inside of the case. It is more handy than a label as there is no risk to the number being lost or transposed. There are no less than four such numbers visible to my lens on the inside of the case.

Inference --that your brother was often at low water (in

need of money). Secondary inference—that he had occasional bursts of prosperity or he could not have redeemed the pledge.” (Pledge—the agreement made on pawning the watch)

The syllogism1. Numbers scratched on the inside of watch

cases are the marks of pawnbrokers in London.

2. There is a number scratched on the inside of this case.

Therefore, it is a mark made by a pawnbroker In England.

Syllogism1. Freshman at OBHS are required to wear

yellow t-shirts.

2. Manuel is a freshman at OBHS

Therefore…?

Syllogism1. The tropical smoothies at Paradise Deli are

made with pineapple juice.

2. This is a tropical smoothie from Paradise Deli

Therefore…..

Syllogism1. All Go-Alpine snow mobiles are equipped

with first aid kits.

2. My uncle bought a Go-Alpine snowmobile.

Therefore…

Complications??? Yes or No I visit OBHS and I see a student wearing a

yellow shirt

Therefore I can conclude that the student is a freshman.

Complications??? Yes or NoYou are on the slopes and someone needed a

first aid kit.

You’re only chance to help him is to find an Alpine-go snow mobile?

Complications??? Yes or No

Male Cardinals have red feathers.

This bird is a male cardinal.

Therefore, it has red feathers.

Syllogism

Among Potato Chip products, it is said that Ruffles have ridges.

By George, this potato chip has ridges.

Therefore this potato chip must be a Ruffles.

Syllogism

All Nike Basketball shoes have a swoosh on the side.

This basketball shoe is a Nike.

Therefore this shoe has a swoosh on the side.

SyllogismThe formula for making coca cola is a secret.

This soda was made from a secret formula.

Therefore, it must be a Coca Cola.

SyllogismUsher sings a song called “Yeah.”

The song that is playing on the radio is called “Yeah.”

Therefore the singer must be Usher.

SyllogismAll bay horses have black manes.

Champ is a bay horse.

Therefore Champ has a black mane.

SyllogismSome Ford SUVs are equipped with DVD

players.

My SUV has a DVD

Therefore it must be a Ford

SyllogismOnly US $1 bills have a picture of George

Washington on them

Here’s a bill with a picture of George Washington on it.

It’s got to be a US $1 bill.