exam Maths Puzzle Numerical Ability

Find the number of degrees in each angle of a regular octagon.

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exam Other Question

How many ways can 9 students (5 girls and 4 boys) be seated in a row if they must be seated in alphabetical order? The difference of two numbers is 77. The second is 7 less than 5 times the first. What are the two numbers?

Can some one please help out with this question?
v/r
Jess