Six girls and Four boys go to the movies. A boy has to sit on each end. How many seating arrangements can there be?

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?