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There were 5 persons, I don't remember the name so let it be A, B, C, D, E
A says: Exactly 1 person is telling lie..
B Says: Exactly 2 people are telling lie
C says: Exactly 3 r tellng lie
D says: Exactly 4 and E says ALL of us r telling lie

Only 1 person is telling the truth.. Who is he ?

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please prepare previous years tcs papers you will get most of the questions from them.. all the best guys.. :)
(2*6!+21*6!)/(14*7!+14*13!) find remainder?