Question
Statement: I) Some colour are nice II)
Some nice are floor III) No floor is blue IV) All colour are good Conclusion: I) Some good are nice is not a possibility II) Some nice are blue III) No nice is blue In the following questions, the relationship between different elements is shown in the given statements. These statements are followed by conclusions. Study the conclusions based on the given statements and select the appropriate answer.Solution

In a regular polygon, the ratio of the exterior angle to the interior angle is 4:5. Find the interior angle of the polygon.
If O is the orthocentre of ΔABC , if ∠ BOC = 1350 then what is the measure of ∠ BAC?
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Find the area of triangle having sides in the ratio 2:4:5 & the perimeter of the triangle is 22 cm