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Guess the decade...
100

Your heart beats (on average) how many times per day

100,000

100

A loaf of bread or a football?

A football. (About 1 pound vs. a loaf of bread at ~0.8 lbs)

100

Which country drinks more coffee per person:

Italy or Finland?

Finland

100

The telephone or the lightbulb?


The telephone (1876) came before the lightbulb (1879)

100

The first credit card (Diner’s Club) was introduced.


What is the 1950s?

200

The strongest muscle (by size) in the human body.

What is the tongue?

200

A gallon of milk or a large house cat?

A gallon of milk. (About 8.6 lbs vs. most house cats at 7–10 lbs, but milk usually wins)

200

Which is taller:

The Eiffel Tower or the Statue of Liberty (including pedestal)?

The Eiffel Tower. (1,083 feet vs. Statue of Liberty at 305 feet)

200

The ballpoint pen or the microwave oven?


Ballpoint pen (1938) came before the microwave (1945)

200

The microwave oven became a household appliance.

What is the 1970s?

300

The only part of the human body that can't repair itself.

What is tooth enamel?

300

A gold bar or a car tire?

A gold bar. (Standard gold bar is ~27 lbs vs. average tire ~20–25 lbs)

300

Which country has more islands:

Japan or Sweden?

Sweden! (Over 260,000 islands vs. Japan’s ~14,000)

300

The washing machine or the vacuum cleaner?


Washing machine (first patent in 1851) came before vacuum cleaner (1901)

300

The first iPhone was released.

What is the 2000s?

400

Your body is made up of about this percentage of water.

What is 60%?

400

A large watermelon or a small dog (Chihuahua)?

A large watermelon. (Often 15–20 lbs vs. Chihuahua around 5–6 lbs)

400

Which is eaten more worldwide:

Rice or bread?

Rice. (It’s the staple food for over half the global population)

400

The radio or the refrigerator?


Refrigerator (early home versions by 1913) came before radio (mass adoption around 1920)

400

The Berlin Wall fell, and the Cold War began to end.

What is the 1980s?

500

These are the only animals that can’t jump.

What are elephants?

500

A human brain or a human heart?

The brain. (About 3 lbs vs. the heart around 10–12 ounces)

500

Which country eats more chocolate per person:

Switzerland or the United States?

Switzerland! (About 20 lbs per person per year!)

500

Bubble gum or peanut butter? 

Peanut butter (1895) came before bubble gum (1928)

500

The internet became available in most homes.

What is the 1990s