We want to see just how two professionals in totally different areas would answer one such question. Pilot Anna Battison and architect Samantha Josephat both answer a mind teaser Google used to ask task candidates: How many golf balls fit into a Boeing 747? with their different professional backgrounds, the two experts approached the concern in really different ways.

*Following is a transcript the the video.*

You are watching: How many tennis balls fit in a 747

You are watching: How many tennis balls fit in a 747

**Anna Battison:** Well, ns hope that"s accurate. Ns feel prefer I must maybe asking somebody.

**Samantha Josaphat:** Um, wish me luck.

**Battison:** So, how many golf balls have the right to you right in a Boeing 747? I... I have no idea.

**Josaphat:** How many tennis balls? Oh, golf...wow. Wow. My an initial step is to dimension the size of a golf ball, i beg your pardon I in reality don"t know.

**Battison:** A golf ball is, ns don"t know...

**Josaphat:** I"ve never played golf before.

**Battison:** If girlfriend play tennis, a tiny bit smaller sized than a tennis ball. Josaphat: I"m gonna predict the a golf round is 4 inches by 4 inch in diameter.

**Battison:** and a headrest is probably, i don"t know. Here"s my head. So let"s say it"s that big and probably that thick. And also now I"m simply trying to failure the chair to number out how numerous golf balls are in it. So, in this headrest, there are about 15. I"m gonna say the there space three rows of three headrests that can fit in the back portion of it. And then I"m gonna to speak there"s two rows of three for the bottom part. Climate that gives us three, six, ripe on the top, 6 on the bottom. 15 time 15 golf balls in every headrest. There are 15 headrests in the seat. That gives us 225 golf balls every seat.

**Josaphat:** I"m currently attempting to draw a plane. I"m together an architect. It"s like, ns gotta get it right. Oh, gosh! I"m sorry. The looks horrible. Can I just line up my wings?

**Battison: **This is very bad. So, you have actually the cabin, i beg your pardon is like, X1, X2 is, like, wherein the passenger goes with all the seats. Those room what the seats are. And also then X3, i m sorry is, like, the undercarriage, which can be under here, and, girlfriend know, simply where every the luggage goes.

**Josaphat:** when I very first think around the aircraft and plan, what is a variable the I can replicate many times? and also that"s the seat.

**Battison***: *In a 747, primarily have two seat here, 2 seats here, an aisle, one aisle, and three seat in the middle. Therefore that"s seven seats across in every row.

**Josaphat:** I will certainly assume a Boeing 747 has around 80 rows.

**Battison:** therefore if there space 366 seats, for this reason 366 seats in a Boeing 747, that method that 366 divided by seven would be about 52 rows.

**Josaphat:** Now, if ns were come say a usual chair because that a person is about 18 inches vast and a Boeing 747 has three aisles that seating through potentially four seats in the middle, 3 seats on one of two people end, how numerous seats room in just one row?

**Battison:** I"m gonna include two seats every row because there"s an aisle below where ns can include a seat, hypothetically. So if I"m adding two seats per row, that would offer me 104 extra seats the I can fit in because that that an initial layer throughout the bottom. There"s 470 seats on the bottom layer time 225. That offers me 105,750 golf balls.

**Josaphat:** So us have, six and also four is 10. For this reason we have actually 10 times 18. That gives us 180 inches. Then us multiply that by 80 rows. That"s 14,400 inches. That"d offer me 1,200 feet. So currently we would have to incorporate circulation.

** Battison:** Now, friend gotta think about, those golf balls room really small. I"ve got so many gaps in in between each seat.

**Josaphat:** So, if i were to relate circulation come an airplane, the would mean the aisles that go indigenous the front and the earlier of the plane, the room in in between the seat so the everyone can gain to your seat comfortably. Battison: I"m gonna seriously ballpark this. So, across, I"ve acquired seven seats. Let"s say there are 7 gaps where 100 golf balls can fit. That"s 7 gaps in each row. So seven times 52 rows is 364. For this reason 364 times, let"s speak in each gap, 100 golf balls deserve to fit, 36,400.

**Josaphat:** And, like, a common building, in new York City"s conventional of quality Housing, you need about 30% that circulation in a space. For this reason what"s 30% the 1,200 feet? That"s 360 feet. That"s 360...square feet. I simply realized it"s not simply feet. 1,200 square feet to add 360 offers us 1,560 square feet. So that includes seats and also circulation.

**Battison:** So, currently I"m gonna photo how plenty of layers of seats can I ridge on top of each various other in that gap in the cabin. I"m gonna say possibly three rows, simply "cause the seats space high. So then I"m gonna execute that number times three, 317,250 golf balls. That"s how plenty of golf balls I have actually in 3 layers the seats. And that come out as being 353,650.

**Josaphat:** currently we need to think around the cockpit, whereby the pilot is, and also areas for meal prep and also the bathrooms.

**Battison: **X2 is an extremely big, right? It"s, like, 52 rows to add the space on top. For this reason I"m gonna speak there"s, friend know, gotta it is in at the very least 10 that"ll fit in there. Now, probably that"s a tiny bit overestimating, however I think ns underestimated for the lot of golf balls anyway. For this reason let"s simply go v that.

**Josaphat:** So, I"m simply gonna estimate 40%. "Cause typically in a building, you need to think about, 40% the the space goes to infrastructure, prefer mechanical systems and also plumbing.

**Battison:** for this reason if there space 353,650 golf balls the fit right into the cabin, there would certainly be 10 that fit in there, so the number separated by 10. That"s gonna be 35,365.

**Josaphat:** What"s 40% of 1,560 square feet? So currently we"ll do 624 plus 1,560, and that"ll gain us 2,184. So now we have the floor setup covered. And also now we need to think about it in volume.

**Battison***: *The X3 is what we have actually left.

**Josaphat:** common height in an apartment in new York can be approximately 8 come 10 feet high. And also then the elevation of the carry-on luggage. So we"ll to speak 11 feet head clearance, and then we"ll add an additional two feet because that the material of the plane. And also so that"s 13 feet height.

**Battison:** ns don"t in reality know precisely how huge a 747 is, however I would imagine very, an extremely big.

**Josaphat:** Now, if we have actually to take into consideration the space below whereby the baggage insurance claim is, typically, someone have the right to actually go in that an are to take luggage.

**Battison:** I would say that it"s approximately the exact same size together the cabin or maybe also bigger.

**Josaphat:** and so I will certainly just double that height and also make the 26 feet. Now I will certainly multiply 26 feet by 2,184 square feet.

**Battison:** The grand total is currently 35,365 add to 353,650 to add 353 again, 650, equates to 742,665. For this reason that"s our grand total for a 747 the does not actually have the 366 seats.

**Josaphat***: *So, my last action would be to divide the complete cubic feet the the aircraft by the cubic feet that I"ve identified for the golf ball.

**Battison:** yet if we have actually an airliner, us do have those seats the can"t host the golf balls.

**Josaphat:** 56,784 cubic feet divided by 12 cubic feet. That full answer would be 4,732 golf balls*. *

**Battison: **If it has 366 seats, 366 seat times however many golf balls deserve to fit right into each seat, we claimed was 225. Therefore 366 time 225 would offer us 82,350.

**Josaphat***: *That really does no feel real. I"m no comfortable with that answer.

**Battison:** for this reason I"m walk to do this number minus this number to obtain our grand total for an airline 747. Offers us 660,315 golf balls.

**Josaphat:** Oh, I know what the problem is. I did 12 cubic feet, no 12 cubic inches. Therefore there"s actually another step. That would certainly be multiplying by 12. Oh, that"s funny. I beg your pardon would offer me 56,784 golf balls. Final answer.

**Battison:** I have a gut emotion that that"s way too little.

**Josaphat:** It might be a small bit short still. Ns mean, I"m gonna have to trust the mathematics at this point.

**Battison:** I believed I would come out to a number that was probably a million or so. Ns think i told you, a headrest is about, like, this big.

**Josaphat:** therefore if i were to walk back, I"d most likely tweak the size of the golf ball.

**Battison:** ns think far more than 15 golf balls have the right to fit right into there. Maybe more along the selection of 25 or 30 golf balls. In aviation, they always want you come refer ago to, girlfriend know, facts. You"re constantly supposed to follow her checklist in an emergency. You"re supposed to count on her instruments.

See more: You Can Use The Arrow Keys To Complete An Entry In Point Mode.

**Josaphat***: *It walk bring back the inner third grade in me, wherein it"s like, oh, you gotta continue to be up all night and figure out this mathematics problem. Battison: do you have an really answer?

**Alex Appolonia:** Well, no exactly. We uncovered a lot of of various answers come this mind teaser. But the whole point of these questions is to show how civilization think. Google no much longer asks these brain teasers, since they don"t predict just how well someone would do at a job, yet we wanted to have a little fun with it. Feel cost-free to let us understand in the comments below more brain teasers girlfriend would prefer to view solved, and also make sure you i ordered it to our channel, so girlfriend don"t miss it.