Question
The ratio between the number of sides of two regular
polygon is 2:5 and the ratio between their interior angles is 10:12. The number of sides of these polygons are respectively:Solution
Let number of side of first polygon = 2x & that of 2nd polygon = 5x ; then ratio of their interior angles = I(1): I(2) = 10:12 or (180 - E1):(180-E2) = 10:12 or 2160 - 12E1 = 1800 - 10E2 or 12E1 - 10E2 = 2160 - 1800 = 360 or 12(360/2x) - 10(360/5x) = 360 or 2160/x - 720/x = 360 or 1440/x = 360 or x = 1440/360 = 4
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This question is based on the five, three-digit numbers given below.
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(4, 14, 44)
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( NOTE: Operations should be perfor...
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196 49 21
18 x 9
If ‘ x' is resultant of the first row, what is the resultant of the second row?
...Select the option that is related to the third term in the same way as the second term is related to the first term.
17 : 361 : : 21 :______
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