If a solid sphere of radius r is melted and cast into the shape of a solid cone of height r, then the radius of the base of the cone is (A) 2r (B) r (C) 4r (D) 3r

What are the differences between similar triangles and congruent triangles?

What are Armstrong numbers?

All real numbers are rational numbers.

A) True

B) False

The L.C.M of the smallest 2 digit composite number and the smallest composite number is:

• (a) 12
• (b) 4
• (c) 20
• (d) 44

Are all natural numbers also whole numbers?