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The angles of a polygon are x, 2x, 2x, (x+30°), (x+20°), and (x-10°). Find the value of x.

a.

45°

b.

84°

c.

85°

d.

95°

The first term of a Geometric Progression(G.P) is 3 and the fifth term is 48. Find the common ratio

a.

2

b.

4

c.

8

d.

16

Thirty boys and x girls sat for a test. The mean of the boys' and girls' scores were 6 and 8 respectively. Find x if the total score was 468.

a.

38

b.

24

c.

36

d.

22

Find the sum of the interior angles of a pentagon.

a.

340°

b.

350°

c.

540°

d.

550°

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