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The Billion Quiz

Can you guess these answers that all have something to do with the number 1 billion?
Quiz by
Quizmaster
Featured Quiz
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Last updated: August 20, 2024
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First submittedAugust 20, 2024
Times taken27,572
Average score64.3%
Rating4.85
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Hint
Answer
Amazing quiz website that surpassed 1 billion quizzes taken in 2024
JetPunk
Countries that have at least a billion people
India
China
A billion times a billion (spell it out)
Quintillion
The only country (so far) to issue a banknote with a face value of 1 billion dollars
Zimbabwe
It travels 1 billion kilometers in about 55 minutes
Light
It happened about 13.8 billion years ago, according to scientists
The Big Bang
Founder of Standard Oil who became the first American with a net worth of $1 billion
J. D. Rockefeller
Part of the body that contains an average of 86 billion neurons
Brain
Prefix that represents one billion in the metric system
Giga
Prefix that represents one billionth
Nano
Type of star that the sun will become in about 5 billion years,
growing so large it might engulf the Earth
Red giant
The most common bird in the world – with a population of around 26 billion
Chicken
By age 30, you will have had about 1 billion of these in your lifetime,
fewer if you are a conditioned athlete
Heartbeats
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85 Comments
Fifi567
+61
Level 32
Aug 20, 2024
Congratulations to the website to reach 1 billion takes 🎉🎉🎉
tshalla
+13
Level 78
Aug 21, 2024
And congrats to Quizmaster and all the quiz creators here.
SoLucky
+1
Level 17
Nov 10, 2025
WOO HOO! (I'm so late XD)
Dimby
+29
Level 82
Aug 20, 2024
Thank you JetPunk for the endless hours of quizzing. Can’t wait for the trillion quiz! 🏆
KiloNova
+2
Level 58
Jan 3, 2025
That would require 125 takes from every person on Earth...
Pienteremile
+1
Level 65
Aug 18, 2025
I'll take that number down to 10
DrWhoFanJ
+9
Level 64
Aug 20, 2024
A billion times a billion is a quadrillion, not a quintillion. (The easy quicker way to do such calculations is to treat it as a [bi x bi]llion=[2x2]llion=[4]llion=quadrillion.)

EtA: None of these answers are correct for one billion of the respective things.

(There aren’t a billion people on the planet as a whole, so how can any single country have that many people‽)

Dimby
+62
Level 82
Aug 20, 2024
Found the time traveler from Victorian England.
DrWhoFanJ
+16
Level 64
Aug 20, 2024
I’m not a time traveller*. I’m simply British.
Quizmaster
+51
Level ∞
Aug 20, 2024
For people wondering what the heck this commenter is talking about, the British used to (prior to 1974) use long scale numbers in which a billion was 1,000,000,000,000.

https://en.wikipedia.org/wiki/Long_and_short_scales

This is now very dated.

DrWhoFanJ
+15
Level 64
Aug 20, 2024
And some of us still do. It’s also still the system used in the rest of Europe and sizeable portions of the rest of the world.
TurkeyCookTime
+25
Level 85
Aug 20, 2024
In other languages, yes, but the short scale is used in virtually all of the English-speaking world. You are one of very few exceptions. Given that this is an English-language quiz, it wouldn't make sense to use the scale that a tiny percentage of English-speakers use.
buck1017
+14
Level 78
Aug 20, 2024
This might be the most ridiculous thing i've ever heard. I had no idea this was a thing, but props to Dimby for recognizing it and making a joke about it.
MarcelVos
+14
Level 66
Aug 21, 2024
It actually makes more sense. A million is a mono-illion, and has 6 zeroes. A billion is bi-illion (two illion) and thus as 2x6 = 12 zeroes. A trillion is a tri-illion and has 18 zeroes and so on.

I am Dutch and we use the affix "-jard" for the numbers in between. So in English it does million-billion-trillion-quadrillion-quintillion-sextillion, but in Dutch it goes miljoen-miljard-biljoen-biljard-triljoen-triljard. These are both the exact same numbers, going from 6 zeroes to 21 zeroes.

evilcheeser
+4
Level 76
Aug 21, 2024
British English used to use the same system. Hence the now antiquated (in English) word Milliard.
Elboy
+7
Level 74
Aug 21, 2024
I'm neither British nor time traveler but the "billion x billion" question can be confusing in France too:

What Americans call a billion (10^9) is called a "milliard" here. Whereas in France, a billion = 10^12.

Anyway, this will not spoil the fun of taking this quiz and congrats to the site for the 10^9 takes!

DelaBriQue
+5
Level 65
Aug 21, 2024
Ca m'a toujours surpris qu'il n'y ait pas d'alignement à l'international. On parle de nombres extrêmement élevés donc finalement peu utilisés, mais tout de même, la confusion que cela doit créer parfois !
BuzzHedges
+1
Level 66
Aug 21, 2024
You are right, and that's why "10^9" is used in international scientific contexts.
Hotsauce12345678
+3
Level 34
Aug 21, 2024
There is literarily 8 billion people in the world how stupid are you?
DelaBriQue
+13
Level 65
Aug 21, 2024
No there are 8 milliards ;)

https://en.wikipedia.org/wiki/Long_and_short_scales

Ferbin
+4
Level 78
Aug 26, 2024
Not as much as you, who doesn't know about long and short scales.
Remster
+11
Level 80
Aug 21, 2024
I bet Americans get squillion and gazillion wrong too.
partdavid
+18
Level 75
Aug 21, 2024
At least I know which country has brazilians of people.
Freestatebear
+1
Level 87
Aug 23, 2024
In these uptight times, I miss some good old-fashioned "W" humor!
bigred34
+1
Level 54
Aug 22, 2024
https://www.census.gov/popclock/ just propaganda then? a simple google search will give you the information that everyone else sees. Good luck
DrWhoFanJ
+2
Level 64
Aug 24, 2024
That’s eight milliard, not eight billion.
8yeetus8
+2
Level 17
Apr 12, 2025
1 Billion = 10^9, 9+9=18, so 1 Billion x 1 Billion = 10^18, 10^18 = 1 Quintillion (in the short scale, 1 Trillion in the long scale)

But I assume you used the long scale so 1 Billion = 10^12, 12+12=24, so 1 Billion z 1 Billion = 10^24, 10^24 = 1 Quadrillion (in the long scale)

However this quiz used the short scale (the more common -illion system)

perfecteights
+1
Level 22
Aug 17, 2025
no it's quintillion

look it up

Ymmot
+7
Level 86
Aug 20, 2024
(Weimar) Germany issued billion-mark bills (1923); I expect that Brazil, Turkey, Yugoslavia, and others with hyperinflation have also done so (though I didn't check, since just Germany proves the point).

The only country currently to have a billion-denomination bill, maybe?

TurkeyCookTime
+4
Level 85
Aug 20, 2024
Hungary as well, there was a billion pengő note post-WWII. Zimbabwe's highest bill currently is a 200, so that doesn't work either. It would make more sense to just remove that question from the quiz.
Ampersandwich
+2
Level 57
Aug 21, 2024
I disagree on the remove, but definitely rephrase it. Maybe "Nation MOST famously known for it's billion dollar bill"
Dimby
+5
Level 82
Aug 21, 2024
None of those currencies are dollars, though?
Neodymium
+2
Level 63
Aug 21, 2024
“Most recently” would be best
Djilas
+1
Level 85
Aug 21, 2024
The question might have been amended before your comment
SmartDude123
+1
Level 44
Aug 21, 2024
True but the question is very badly worded. They should allow other countries with hyperinflation
cathlete
+8
Level 77
Aug 20, 2024
Love this celebration!
FreeStater
+3
Level 79
Aug 20, 2024
Nice quiz. Consider accepting "speed of light"?
breadau
+3
Level 43
Aug 24, 2024
The 'speed of light' can't travel.
MasterRocket
+6
Level 81
Aug 20, 2024
Congrats JetPunk on 1 Billion Takes!!🥳🥳
overtired
+10
Level 87
Aug 20, 2024
Congrats on the billion Quizmaster! And all the other amazing quiz makers and takers that contributed to it!

(I may have tried "Twinkies" for the last question.)

Kingsfisher
+4
Level 68
Aug 20, 2024
Incredible! Congrats with 1 billion takes!
Eomer
+3
Level 36
Aug 20, 2024
Congratulations on 1 billion takes!
Neodymium
+4
Level 63
Aug 20, 2024
Congratulations on 1,000,000,000!
potatopierogi
+3
Level 70
Aug 21, 2024
Congrats on a billion! Super cool!!
GlassMonkeyCode
+3
Level 69
Aug 21, 2024
Also, for the last question, people who fall in love regularly might have fewer of them.
McKenzieFam
+3
Level 68
Aug 21, 2024
Here's to the billion, JetPunk! 🥂
ThatHyperCat
+2
Level 30
Aug 21, 2024
Congrats on 1 billion !!
Xtrordinary
+2
Level 74
Aug 21, 2024
1 billion congratulations!!
Muffins421
+2
Level 53
Aug 21, 2024
Congrats on a billion, Jetpunk
Badoom
+1
Level 46
Aug 21, 2024
congratulations!

Would "hen" also be a possible answer to the chicken question perhaps?

Ampersandwich
+2
Level 57
Aug 21, 2024
I don't think so, because "hen" often just refers to the female version of a bird, like a descriptor.

Think how "queen" wouldn't work for "ant/bee" because that's what describes it, not the species

Ampersandwich
+1
Level 57
Aug 21, 2024
Congrats! Thanks a million, scratch that, billion, for all the fun quizzes & brain wracking! (Plus random info from comments :)
Hotsauce12345678
+2
Level 34
Aug 21, 2024
Congrats quizmaster you guys make the best quizez
Noivern
+2
Level 65
Aug 21, 2024
congrats on 1 billion!
Smokebasics
+2
Level 76
Aug 21, 2024
Congratulations 🎉 for reaching 1 billion
Pnwginger
+1
Level 32
Aug 21, 2024
Thanks for the quiz! Can you consider allowing Big Bang without the “the”?
erikj
+5
Level 67
Aug 21, 2024
CONGRATS! As an ornothologist I was stumped on the bird question because I never considered domesticated birds. Great quiz!
evilcheeser
+1
Level 76
Aug 21, 2024
Red-beaked Quelea, anyone?
MrBill
+2
Level 39
Aug 21, 2024
Can you wrap your head around how much one billion is?

Here's one explanation.

You can probably understand how much one thousand dollars is.

OK, it's January 1 of the year 1 and you have one billion dollars stuffed in your mattress not earning interest, just sitting there. Now, using the current calendar, you give away one thousand dollars every day (that's 365.25 days per year) to today. At that rate, you have enough to continue doing that until early November of 2737. And that's just ONE billion.

Neodymium
+1
Level 63
Aug 22, 2024
365.24*

someone correct me with something more precise

TheSinnohman
+1
Level 66
Aug 21, 2024
The first question already somehow doesn't have 100% correctly answered

People upon starting this quiz: "I have no memory of this place..."

Capybarra
+2
Level 44
Aug 21, 2024
YESSS WE DID IT!!!!!
Gossguy
+2
Level 68
Aug 21, 2024
We did it!!! 1 Billion takes! And I finished this quiz within the last second! phew!
ooftownroad
+1
Level 66
Aug 21, 2024
accept sporcle for the first question :-)
Neodymium
+15
Level 63
Aug 21, 2024
ban
BlackLab
+1
Level 66
Aug 21, 2024
For the Most common bird in the world question, I was thinking about the most common bird I seen flying around.
BuzzHedges
+2
Level 66
Aug 21, 2024
I get that trained athletes have slower *resting* heartbeats, but they also spend hours training at higher heart rates... Those effects don't balance out?
Neodymium
+1
Level 63
Aug 22, 2024
True! Should be ommitted as imo it’s likely they might have more. Also may live longer as more fit, therefore more heartbeats.
Dimby
+2
Level 82
Aug 22, 2024
Most people spend a third of their life asleep. We out-of-shape slobs have about 60-70 bpm while sleeping. Conditioned athletes can be as low as like 35. Michael Phelps reportedly has a sleeping bpm of 38! If 8 hours is the average sleeping time, that’s 8x60=480 minutes. Phelps has 18,240 beats per sleep. Someone who’s not athletic has at least 60 bpm, so 28,800 per night. Even during strenuous training, it’s unlikely that Phelps would catch up to a normal person in the day, since very conditioned athletes don’t have their bpms spiking to 120 when they walk up stairs or jog for a bus. Even full out I bet conditioned athletes rarely hit higher than 150 bpm, while I bet I would hit 160 bpm pretty quick if I ran full out!
CaptainUnderpant
+2
Level 81
Aug 28, 2024
Excellent point, excellent explanation
michaelngwa
+3
Level 61
Aug 21, 2024
Glad to be a part of history! One billion is crazy.
Cinderz
+2
Level 47
Aug 21, 2024
Congrats jetpunk on 1 billion, love this website and the quizzes on it!
littleoblivions
+2
Level 49
Aug 21, 2024
congrats on a billion!!! love this site :)
RedStar12345
+1
Level 55
Aug 21, 2024
The world has 1 billion chickens??!!!??? Oh, my...
Neodymium
+1
Level 63
Aug 22, 2024
I think there’s 19 billion, so like 1:2 ratio
InterAlia
+3
Level 81
Aug 27, 2024
26 billion according to...the clue in the quiz.
ShievaAndGolly
+3
Level 59
Aug 22, 2024
"Amazing quiz website that surpassed 1 billion quizzes taken in 2024"

Wow, and quite humble, too!

Paladin23
+2
Level 45
Aug 23, 2024
Yay! This is history!
Julotek
+3
Level 65
Aug 23, 2024
Congrats for the milliard :)
Imthedood
+1
Level 56
Aug 24, 2024
WOOHOO! Congratulations to everyone on 1 billion quizzes taken! Happy to be part of this occasion.
OvenBobat
+1
Level 63
Feb 25, 2025
Didn't Hungary technically issue a banknote of 100 Quintillion? Shouldn't that count as well?
Dovicz
+1
Level 80
Mar 13, 2025
Regardless of the whole long/short scale for millions, I think you should accept "a quintillion", with the article.
MorriLorri
+1
Level 45
Apr 26, 2025
for the last one i thought it was children
NeirolVeritas
+1
Level 35
Jul 4, 2025
When it said to spell out 1billion^2, I thought it meant to write 1000000000000000000000000.
Lithian5032
+1
Level 57
Sep 5, 2025
the banknote one is incorrect as hungary at their peak inflation in 1945 and 1946 had inflation rates of 4.19 quadrillion percent which peaked at banknotes exceeding in a 100 quintillion tengo banknote.
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