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If R is operated at third place in a sequence, which of the following cannot be the second program in that sequence ?

  • A.Q
  • B.S
  • C.T
  • D.U
  • E.W

Answer: A

Correct answer: Q

With R third, V must come after it, and the day must end with S or U, so V takes the fourth place and the fifth is S or U. That fixes positions three, four and five, leaving only the first two free. Q requires T to be operated after it, and there is now no place for T at all - so Q cannot be second.

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