#Sequence

191 messages · Page 1 of 1 (latest)

analog slate
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Help anyone? despair

glacial oxideBOT
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analog slate
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ok

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hru

fiery terrace
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ok

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what did you do so far

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@analog slate

analog slate
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n(n+1)/2

fiery terrace
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Ok

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So how many terms are there

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Like different numbers

analog slate
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8 ig

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or 7

fiery terrace
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No

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8(9)/2 is not 105

analog slate
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wait

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let me check

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14?

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yea

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14 it is

fiery terrace
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Mhm

analog slate
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@fiery terrace

fiery terrace
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So how many numbers less than 14 are divisible by 3

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That are positive

analog slate
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4

fiery terrace
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Ok

analog slate
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3,6,9,12

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u r slow

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fr

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🐢

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hello?

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ok

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dead?

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hmm

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ig

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u r

fiery terrace
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So for the nth term there will be n numbers for that term

analog slate
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yeas

fiery terrace
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Therefore just add them

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?

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I’m traveling through like tree zone rn

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Just registered

fiery terrace
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I would suggest eliminating 2 blocks of carriages at the end

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Which means 700 - 398

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So now you have 302 passengers and 8 carriages

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Try to work from there

analog slate
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so some carriages will have 38 and some will have 39

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answer is 77?

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@fiery terrace

fiery terrace
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I got something else

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@analog slate

wispy prairie
fiery terrace
wispy prairie
wispy prairie
fiery terrace
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there is no 15

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check the sum

wispy prairie
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Okay wait

wispy prairie
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It only upto 14

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Thanks man

fiery terrace
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yea

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make sure to not only give answer

wispy prairie
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So the ans is 30

fiery terrace
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he already got it

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he just disappeared for this question

wispy prairie
fiery terrace
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but they need to know how to do it

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the point of helping them is to make sure they dont ask the same kinds of questions again

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you can solve it

wispy prairie
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Um so should I explain

fiery terrace
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but dont tell answer

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if you want to

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either solve the problem by yourself

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or actually help them

wispy prairie
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Okay

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Understood

analog slate
fiery terrace
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you still here?

analog slate
fiery terrace
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ok

analog slate
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so

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there is another question

fiery terrace
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how did you arrive at 77

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thats wrong

analog slate
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but

analog slate
fiery terrace
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can i see?

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or do you just want to know

analog slate
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i am on laptop

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idh phone

fiery terrace
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how I did it

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ok

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so we have 8 carriages left

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and 302 people

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lets call the outer 3 carriages on each side x

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and the middle two a + b

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so we know a + b + 2x = 302

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do you follow?

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hello

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do you want me to write it out on paper?

analog slate
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brpo

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my internet

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😭

analog slate
fiery terrace
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since we eliminate 5 on either side

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18 - 5(2)

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= 8

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that eliminates 199(2) = 398 people

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so we have 8 carriages and 700 - 398

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= 302 people left

analog slate
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302

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yea

fiery terrace
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ok

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so we know any 5 add to 199

analog slate
fiery terrace
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yea

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i called the side three carraiges on either side x

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and the middle lets just call a

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so a + 2x = 302

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follow?

analog slate
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yes

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i am writing it

analog slate
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so there should be another variable

fiery terrace
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i combined and called them a

analog slate
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oh

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is it possible?

fiery terrace
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beacuse we are looked for both of them combined

analog slate
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ohh

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right

fiery terrace
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not each one singularly

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ok

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so we know the left 5 carriages

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are composed of the left 3 + middle 2

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so x + a

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and the right 5 are composed of right 3 + middle 2

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so also x + a

analog slate
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wait

analog slate
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6 carriages?

fiery terrace
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wdym

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we have 8

analog slate
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2 in the middle

fiery terrace
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the 5 left most will be

analog slate
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and 3 in each side

fiery terrace
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the 3 in the side and the 2 in the middle

analog slate
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i am not following

fiery terrace
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ok wait

analog slate
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i am

fiery terrace
analog slate
fiery terrace
analog slate
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whats next?

fiery terrace
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so now we know

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that any 5 add to 199

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so a + x + a + x = 199(2)

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and we also have a + 2x = 302

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just solve

analog slate
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answer is 96

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bro

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ilt

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ily

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are u a girl by any chance?

fiery terrace
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yes

wispy prairie
analog slate
analog slate
fiery terrace
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14

wispy prairie
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Wdym by stalker

analog slate
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fine by me

fiery terrace
analog slate
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u r 14 and smarter than me?

analog slate
wispy prairie
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Bromance

fiery terrace
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ok anyway

analog slate
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+close