At 30% discount the selling price of an article is Rs 1050. What is the selling price (in Rs) if the discount is 15%?

By selling 100 pencils, a shopkeeper gains the selling price of 20 pencils, His gain percent is:

The ratio of Volume of two spheres A and B is 8 : 1. The Surface Area of Sphere B is 616 cm². Find the radius of sphere A.

The value of $$ {(sec^{2}θ+tanθ\cotθ-tan^{2}θ)}$$

Simplify $$ \sqrt{(1-sin^{2}θ) ÷(1-cos^{2}θ)}$$.

If the area of a circle is 9π sq.cm then it circumference is

The area of a triangle is 456 sq.cm and its height is 24 cm. The length of its base is

A polygon has 9 sides, what is its interior angle?