The value of a4−b4 is (a) (a2 - b2)(a + b)(a - b)(b) (a2 - b2)(a - b)(a - b)(c) (a2 + b2)(a + b)(a - b)(d) (a2 + b2)(a + b)2

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?