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Two best learning experiences in high school (chemistry is related to our…
Two best learning experiences in high school
chemistry is related to our life
in dentist
UV light is used to make
light-curing resin hard
light-curing resin is a photosensitive polymer
blue light is used
silver easily react to sulfer
you should not bring accessory to hot springs
luminol reaction
it is known of dramas
one of chemiluminescence
luminol reacts to oxydol in basic solution and it shines
math
Monty hole
it is a famous question of probability
1.There are 3 doors in front of you.One of them is a correct door.The others are incorrect doors.
2.You choose 1 door
3.The master of the game open an incorrect door in remaining 2 doors.
4.Then you can change your door between 2 remaining doors.
Do you change,or not?
At first almost all people think that changing door has nothing to probability that you choose the correct door
But in fact if you change the door, you can choose the correct door 2/3 in probability
birthday paradox