QUESTION 2)
5 boys and 5 girls go to an exhibition and the cost of a ticket is Rs 50. Each girl has a fifty rupee note while each boy has hundred rupee note they stand in a queue at the counter and the cashier does not have any money in the beginning, then the number of ways of arranging the boys and girls, So that no one waits for a change is N(120)², find N.
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