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On her vacations Veena visits four citie...

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

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(2), (1)/(6)`
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