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Every station in N railroad issues every other stations ticket. Some stations are added. Now they have to issue 46 more tickets. Say the Number of stations after and before added

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Janaranjani please explain it broadly
6 years agoHelpfull: Yes(3) No(0)

let N(N-1) = t;
(N+x)(N+x-1) = t+46;
BY trail and error method x=2 and N=11 4 marks
8 years agoHelpfull: Yes(1) No(0)

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