The angles of a polygon are x, 2x, 2x, (x+30°), (x+20°), and (x-10°). Find the value of x.
45°
84°
85°
95°
The first term of a Geometric Progression(G.P) is 3 and the fifth term is 48. Find the common ratio
2
4
8
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.
38
24
36
22
Find the sum of the interior angles of a pentagon.
340°
350°
540°
550°
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