mathmath333
  • mathmath333
A dictionary has different words that only consists of letters {ACHINS}. What will be the position of the word SACHIN in that sequence?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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mathmath333
  • mathmath333
\(\large \color{black}{\begin{align} & \normalsize \text{A dictionary has different words that only consists of letters {ACHINS}.}\hspace{.33em}\\~\\ & \normalsize \text{ What will be the position of the word SACHIN in that sequence?}\hspace{.33em}\\~\\ & a.)159 \hspace{.33em}\\~\\ & b.)160 \hspace{.33em}\\~\\ & c.)161 \hspace{.33em}\\~\\ & d.)162 \hspace{.33em}\\~\\ \end{align}}\)
phi
  • phi
do they define what a "word" is ?
imqwerty
  • imqwerty
^

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mathmath333
  • mathmath333
example ACIHSN is a word
imqwerty
  • imqwerty
well the question makes sense only if we can make any random wrd
imqwerty
  • imqwerty
we can also conclude that repetition is not allowed :)
mathmath333
  • mathmath333
there are 6! of the words there as repetion is allowed
mathmath333
  • mathmath333
and S starts from 5 last 5! =120
phi
  • phi
yes, but we will get 601 using that.
mathmath333
  • mathmath333
but 6!-5!=600 but the answer is 601 , i m confused on that
imqwerty
  • imqwerty
1) calculate all possible combinations of words tha can be made with A fixed 2)do the same with C, H, I, N 3) now we have S and luckily the 1st wrd that can be made starting with S is SACHIN :P so can u do it now :)
phi
  • phi
there are 120 "words" per starting letter the first 5 groups use up 600 slots SACHIN will be in slot 601
phi
  • phi
but that is no where near your answer choices of about 160
imqwerty
  • imqwerty
yea 601 is the answer :)
mathmath333
  • mathmath333
oh lol yea
mathmath333
  • mathmath333
i wrote the choices incorrectly it was supposed to be 599,600,601,602
imqwerty
  • imqwerty
hehe e.e XD
phi
  • phi
playing a joke on me! how mean!
imqwerty
  • imqwerty
^
mathmath333
  • mathmath333
hallucinations happen to everyone including me
imqwerty
  • imqwerty
LAWL ( ͡° ͜ʖ ͡°)

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