If ABC is an isosceles triangle and angle A lie between 60 degree to 90 degree, then prove that side length BC lie between side length AB to square root 2 of length AB.

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?