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[" Example "14" On her vacations Veena v...

[" Example "14" On her vacations Veena visits four cities "(A,B,C" and "D)" in a random "],[" order.What is the probability that she visits "],[[" (i) A before "B" ? "," (ii) "A" before "B" and "B" before "C?],[" (ii) A first and "B" last? (iv) "," A either first or second? "],[" (v) A just before "B" ? "]]

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