TCS Company

Five college students met at a party and exchanged gossips. Uma said, Only one of us is lying. David said, Exactly two of us are lying. Thara said, Exactly 3 of us are lying. Querishi said, Exactly 4 of us are lying. Chitra said All of us are lying. Which one was telling the truth ?
option
a) David
b) Querishi
c) Chitra
d) Thara

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TCS Other Question
Cara, a blue whale participated in a weight loss program at the biggest office. At the end of every month, the decrease in weight from original weight was measured and noted as 1, 2, 6, 21, 86, 445, 2676. While Cara made a steadfast effort, the weighing machine showed an erroneous weight once. What was that.
option
a) 2676
b) 2
c) 445
d) 86 A village milkman carries out adulteration of milk with water to make higher profits.He has 2 cans one with water and another with pure milk.He pours from can 1 to can 2 sufficient to double its contents and the repour from 2 to 1 enough of the mixture to double the contents.He again repours from 1 to 2 to double the contents of No.2.Finally both cans had equal amount of milk although water is onelitre more than milk in can No.2.Then howmuch more water than milk is there in can 1?