Maths-
General
Easy
Question
Three vertices of n sided convex polygon are selected. If the number of triangles that can be constructed such that none of the sides of the triangle is also the side of the polygon is 30, then the polygon is a -
- Heptagon
- Octagon
- Nonagon
- Decagon
The correct answer is: Nonagon
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Number of ways in which 2 Indians, 3 Americans, 3 Italians and 4 Frenchmen can be seated on a circle, if the people of the same nationality sit together is -
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Number of 3 digit numbers which have their digits either in increasing order or in decreasing order is -
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Reason : In any triangle ABC; r1 + r2 + r3 = 4R.
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If 
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Assertion: The orthocentre of the given triangle is coincident with the in-centre of the pedal triangle of the given triangle.
Reason : Pedal triangle is the ex-central triangle of the given triangle.
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A large number of primary follicles degenerate during the phase from birth to puberty. Therefore at puberty each ovary has about
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Assertion : The side of regular hexagon is 5 cm whose radius of inscribed circle is 5cm.
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In any equilateral , three circles of radii one are touching to the sides given as in the figure then area of the
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