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Question
During a trial, an attorney is planning to call to the stand to testify six different witnesses- T, V, W, X, Y, and Z. She will call each witness exactly one time, and the other in which she calls them is subject to the following conditions
(i) The fourth witness must be T.
(ii) W and Y must both be called before V.
(iii) X must be called before W.
Which of the following could be true about the order in which the witnesses are called?
Options
T is called sixth
V is called fourth
W is called first
x is called first
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Solution
x is called first
Explanation:
Option 'x is called first ' is correct as W, X, and Y have to be called before V, and T has to be called at 4th position so V can come only at 5th or 6th position which leads to given possibilities 1. X, 2. W/Y, 3. Y/W, 4. T, 5. V, 6. Z or 1. X/Z, 2. Z/X, 3.Y/W, 4. T, 5. W/Y, 6. V. Thus X is called first is correct.
Option 'T is called sixth' is incorrect as T is to be called in the 4th position only.
Option 'V is called fourth' is incorrect as the only T can be called in the 4th position.
Option 'W is called first' is incorrect as X must be called before W, so W can't be called first.
