时间:2018-12-28 作者:英语课 分类:趣谈英语


英语课

 Pre-Listening Vocabulary



paradox 1: a statement that seems senseless, even though it’s possible or true
probable: likely
random 2: not planned

The Birthday Paradox


 


In a classroom of 23 people, there is a 50-50 chance that two of them have the same birthday. This is called the Birthday Paradox (also known as The Birthday Problem). While it may seem senseless that two people out of 23 share a birthday, it is actually quite probable. The reason it seems unlikely is because of how you think of it. You think that it’s unlikely that you have the same birthday as someone else. You don’t think about the chances of the other 22 people in the room. If you think of it that way, you can see how the probability greatly increases. The first person has 22 chances to find a match on the attendance list. The second person only has 21 chances. When you get to the end of the list, you can add up all of the chances. Eventually, you find that there are 253 chances of finding matching birthdays in a random class of 23 people. Next time you’re in a group of 20-30 people, test out this probability theory.



1 paradox
n.似乎矛盾却正确的说法;自相矛盾的人(物)
  • The story contains many levels of paradox.这个故事存在多重悖论。
  • The paradox is that Japan does need serious education reform.矛盾的地方是日本确实需要教育改革。
2 random
adj.随机的;任意的;n.偶然的(或随便的)行动
  • The list is arranged in a random order.名单排列不分先后。
  • On random inspection the meat was found to be bad.经抽查,发现肉变质了。
学英语单词
2-bromopropane
acetochloral
acro-cephalosyndactyly
addicts
alvidrez
androgynism
Androni
annualus
anti-cyclin
arbo
arc-weld
as we say
attitude (of strata)
Auger electron spectrometry
back action
battens
be discharged from prison
beatenness
bevel-angle
buffer intensity
burn-off chamber
car hoist and body stands
cloud OS
continuous upseting
control experiments
coordination number
copper minimum content
Cost of Cleaning Pollutants from Ships
Custer City
cylinder casting
data loop transceiver (dlt)
Doppler bank
dynamic loss tensile modulus
electric line of force
farinhas
fastness to heat
five-wire system
flammete
fleece lined
foreign currency statement
fuel lattice
Fulsed
gap-filler input
gaster
generation time
giroflee
gushiness
heartwell
hematopenia
ingrates
integrated square
isobrachial
Kaliningradskiy Zaliv
kerato-iridocyclitis
keyboard lock state
kostelic
laciniatas
least absolute deviation fit
leucodrin
likeglobin
locks her up
maculotriton serrialis
magnetic energy density of magnetostatic field
Melia azedarach L.
metallic color
metric capacity units
milked-fever
no-return point
normal gastric acid curve
not yet due
particulate composite material
Pasteurella septica
payard
pentapetalus
phenoplasts
pollution-related disease
portable automaic data recording equipment
poster paper
preset prism
prevailing visibility
problem statement analizer
regarding henry
rock wreath
saccule
Salmon Bank
scleral ring
scrab
settlement movement
Siheung
soak
steel motor lifeboat
straight tooth
strontium bisulfate
syncephalastrum racemosum
tangshans
tarred-and-feathered
technical economics of forestry
the Keeper of the Exchange and Mint
timing filter amplifier
tixt
Ust-Amginskoye
warp ikat