UMass Amherst Invitational 22-23
40
What was the population of Ghana in 1950?
7
How many books were sold in the U.S. in 2021?
9
How many photos are stored in the camera rolls of all iOS devices around the world?
12
How many flights by major U.S. carriers were canceled in 2021? TB5
5
How many gallons of water are used for showering in the United States each year?
12
How many motor vehicle crash deaths have there been in the last 5 years?
5
How many sheets of paper are used in US schools each year?
10
How many tons of food waste is generated in Singapore each year?
6
Assuming minimal light pollution, how many stars can you see in the night sky?
4
What is the ratio of the atmosphere’s mass to the Earth’s mass?
-6
How many days does it take oysters in the Chesapeake Bay to filter the entire water volume of the bay?
2
How many Mercurys could fit inside Jupiter?
4
What is the total weight, in pounds, of caribou in Alaska?
7
At top speed, how many times would a hummingbird’s wings beat while flying 30 miles? TB4
5
How many dogs are there in the world?
8
How many miles will an Arctic Tern fly in its lifetime?
6
In 2022, what was the underwear market revenue in the US in dollars?
10
What is the median lifetime earnings, in dollars, for an American?
6
In 2022, how many U.S. merger and acquisition transactions were valued at more than one billion dollars?
2
How much profit per year, in dollars, do the Fortune 500 companies make combined?
9
How many more smartphones were sold in 2021 than 2020?
8
In California, how many target stores are there per person? TB3
-5
In 2021, how many millionaires were there in Germany?
6
In 2021, what was the ratio of Cambodia’s GDP per capita to the U.S.’s GDP per capita?
-2
On average, how many kilowatt-hours will a residential solar panel produce per month?
2
How much energy, in joules, would it take to convert 10 grams of water to 10 grams of steam at 100 degrees Celsius?
4
How many U.S. homes can an average wind turbine power?
3
How much energy, in joules, would it take to raise the atmosphere’s temperature by one-degree Celsius? TB2
22
How much energy, in kWh, does the average Canadian household use per year?
4
How many calories does your brain consume per day?
2
How much energy, in joules, would it take to bring an average person to 1% the speed of light?
12
Suppose we were able to capture all the sun’s energy reaching the Earth’s surface. What is the ratio of that energy to global energy consumption?
4
If Jerry flips a hundred fair coins, what is the percentage chance that at least 85 of the coins end up as heads?
-11
Jalal flips an unfair coin (heads 3 10 of the time and tails 7 10 of the time) 50 times and calls it an experiment. On average, how many experiments will Jalal have to conduct until he flips at least 48 tails? TB1
5
How many prime numbers are there that are less than 1,000,000?
5
How many elements are in the power set of set S, where S consists of the integers from 1 to 1000?
301
How many possible five-card hands can you deal with a standard 52-card deck?
8
If you rolled ten twenty-sided dice, what percent of the time would you roll a total of 18?
-7
What is the hundredth Fibonacci number? (Consider the first to be 0 and the second to be 1).
20
What is the volume of an icosahedron with side length 10,000?
12
