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mathmath333
 one year ago
A train is running from station A to station B.
7 people enter the train between A and B.
9 stops are their between A and B.
In how many ways can the tickets be purchased
if no restriction is their with respect to number
of tickets .2 people donot buy the same ticket .
mathmath333
 one year ago
A train is running from station A to station B. 7 people enter the train between A and B. 9 stops are their between A and B. In how many ways can the tickets be purchased if no restriction is their with respect to number of tickets .2 people donot buy the same ticket .

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mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0\(\large \color{black}{\begin{align} & \normalsize \text{ A train is running from station A to station B.}\hspace{.33em}\\~\\ & \normalsize \text{ 7 people enter the train between A and B. }\hspace{.33em}\\~\\ & \normalsize \text{ 9 stops are their between A and B.}\hspace{.33em}\\~\\ & \normalsize \text{ In how many ways can the tickets be purchased}\hspace{.33em}\\~\\ & \normalsize \text{ if no restriction is their with respect to number}\hspace{.33em}\\~\\ & \normalsize \text{ of tickets .2 people donot buy the same ticket .}\hspace{.33em}\\~\\ & a.)\ 45C7 \hspace{.33em}\\~\\ & b.)\ 63C7 \hspace{.33em}\\~\\ & c.)\ 56C7 \hspace{.33em}\\~\\ & d.)\ 52C7 \hspace{.33em}\\~\\ \end{align}}\)

ganeshie8
 one year ago
Best ResponseYou've already chosen the best response.0I remember doing this problem a few days back.. you mathmate and me

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0"I remember doing this problem a few days back.. you mathmate and me" by that logic answer should be 55C7 which is not in options

mathmate
 one year ago
Best ResponseYou've already chosen the best response.29 stations between A and B from where passengers get on. So there are 9+8+7+6+5+4+3+2+1=45 ways to buy tickets, depending on where the passenger gets on. Now there are 7 passengers, so can you do the rest?

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0why did u exclude last station B . It should be total 10 stations.

mathmate
 one year ago
Best ResponseYou've already chosen the best response.2You don't need a ticket to go from B to B!

mathmate
 one year ago
Best ResponseYou've already chosen the best response.2Oh, if you mean getting on at A, that's also excluded, it says passengers get on between A and B.

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0i m sill confused as what this question asks

mathmate
 one year ago
Best ResponseYou've already chosen the best response.2Example: dw:1442320549526:dw Say there are 3 stations between A and B, AND if passengers get on at the intermediate stations ONLY, then the number of tickets equal Numbers like #2 means second station after A. 3 (#1#2, #13,#1B)+ 2 (#2#3, #2B) + 1 (#3B) =6 If there are 3 passengers, then there are 6C3 ways to buy tickets.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442321071084:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so we don't know how many station exactly there between A and B but at least there is 9

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.09 stops mean 9 stations

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0. hehehe sorry i missread

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the answer is A 45C7

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait i didnt read the last part about 2 ppl not buying the same ticket

mathmath333
 one year ago
Best ResponseYou've already chosen the best response.0answer given in book is 45c7

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yea i was thinking 2 pp not buying the same ticket wont matter

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so yea basically 9+8+7+6+5+4+3+2+1=45 and there is 7 passengers so 45C7
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