Question 1102191
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If the 5 girls are together, then the 3 boys are also together.<br>
The number of ways of arranging the 5 girls is 5!=120; the number of ways of arranging the 3 boys is 3!=6.<br>
Since the 8 people are arranged in a circle, you don't know "where the starting point is"; it could be with any one of the 8 people.<br>
So the total number of arrangements is
{{{(120*6)/8 = 90}}}<br>
(Try to get other answers; I often analyze this kind of problem incorrectly.)