ABC is an equilateral triangle of side 6 cm. If a circle of radius 1 cm is moving inside and along the sides of the triangle, then the locus of the centre of the circle is an equilateral triangle of side is
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Two numbers are in the ratio 4:5 and their HCF is 13. Their LCM is
If there are four lines in a plane, then what cannot be the number of points of intersection of these lines?
A can do a work in 15 days and B in 20 days. If they work on it together for 6 days, then what fraction of work is left?
On selling 120 bottles, Vijay earns profit equal to the cost price of 10 bottles. What is the profit percentage?
The internal bisectors of ∠Q and ∠R of triangle PQR meet at O. If ∠P = 70°, then what is the measure of ∠QOR (in degrees)?
In an arithmetic progression, if 9 is the 5th term, -26 is the 12th term, then -6 is which term?
What is the equation of the line if its slope is 3/4 and yintercept is 5?
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