Please help... | Mathematics | Page 1

jovial skyBOT Mar 21, 2024, 1:18 PM

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hollow lichen Mar 21, 2024, 1:23 PM

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Hello, what do you think would happen if there was only 2 digits of numerics and letters while numerics were first and letters were second?

blissful zephyr Mar 21, 2024, 1:46 PM

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i dont fully get u

hollow lichen Mar 21, 2024, 1:49 PM

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humor me for a sec

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i want you to tell me how many possible ways a 2 digit code can go if the first digit is numeric and second is a letter

hollow lichen Mar 21, 2024, 2:18 PM

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i guess u dont want help :/

blissful zephyr Mar 21, 2024, 2:26 PM

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hey sorry was eating

blissful zephyr Mar 21, 2024, 2:27 PM

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hollow lichen i want you to tell me how many possible ways a 2 digit code can go if the first ...

wont it be 240?

hollow lichen Mar 21, 2024, 2:27 PM

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what is the multiplication to arrive at this number?

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there are 10 numeric digits which are 0,1,2,3,4,5,6,7,8,9

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and there are 27 letters in english alphabet

blissful zephyr Mar 21, 2024, 2:28 PM

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wait no its 260

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there are 26 letters

hollow lichen Mar 21, 2024, 2:29 PM

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oh yea

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i looked at google and it showed 27 xD

blissful zephyr Mar 21, 2024, 2:29 PM

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yep so 260 possible combinations

hollow lichen Mar 21, 2024, 2:29 PM

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exactly

blissful zephyr Mar 21, 2024, 2:29 PM

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hollow lichen i looked at google and it showed 27 xD

oh lol

hollow lichen Mar 21, 2024, 2:29 PM

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now what would you do for 5 digits with 3 numerics and 2 letters?

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in this order

blissful zephyr Mar 21, 2024, 2:30 PM

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999 x 26 + 999x25

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wouldnt that be it?

hollow lichen Mar 21, 2024, 2:30 PM

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what is that equation xD

blissful zephyr Mar 21, 2024, 2:30 PM

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wait no that would be incorrect

hollow lichen Mar 21, 2024, 2:30 PM

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it would be 10x10x10x26x26

blissful zephyr Mar 21, 2024, 2:31 PM

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wouldnt that be incorrect

hollow lichen Mar 21, 2024, 2:31 PM

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if its for this order it is correct

blissful zephyr Mar 21, 2024, 2:31 PM

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as altho the digits can repeat the letters have to be different so wouldnt it be 26 x 25

hollow lichen Mar 21, 2024, 2:31 PM

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but we need to have all possible combinations of digits

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given only 3 numeric and 2 letters exists

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so now we need to find the amount of positions possibl

hollow lichen Mar 21, 2024, 2:32 PM

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blissful zephyr as altho the digits can repeat the letters have to be different so wouldnt it be...

no because letters can be used more than 1 time

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its not decreasing

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oh yea it says different

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ur right

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i missed that

blissful zephyr Mar 21, 2024, 2:33 PM

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so its 10x10x10x26x25 right?

hollow lichen Mar 21, 2024, 2:33 PM

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exactly

blissful zephyr Mar 21, 2024, 2:33 PM

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thank you so much

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wait but here it doesnt specify the position

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so it could ABC12 A1B2C AB12C ....

hollow lichen Mar 21, 2024, 2:35 PM

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yes now we come to that

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the positioning

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this is where the combinations come in

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btw the question is not about probability but combinatronix

blissful zephyr Mar 21, 2024, 2:35 PM

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ohhh

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so then what would we do

hollow lichen Mar 21, 2024, 2:42 PM

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forget this i found a better one

hollow lichen Mar 21, 2024, 2:46 PM

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blissful zephyr so its 10x10x10x26x25 right?

you gotta multiply this with 5 combination 3 or 5 combination 2

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reasoning: since we need to select the possible places for letters (for example) after we choose 2 positions out of 5 the rest (which is 3) will be automatically numeric

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so we only need the possible positionings of numerics or letters

#Please help...