[" EXAMPLE "1quad 5" persons "A,B,C,D" a...

[" EXAMPLE "1quad 5" persons "A,B,C,D" and "E" are in a queue of a shop."],[" The probability that "A" and "E" always occur together,is "],[[" (a) "(1)/(4)," (b) "(2)/(3)," (c) "(2)/(5)," (d) "(3)/(5)]]

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