The equation ax + by + c = 0 represents a straight line (a) For all real numbers a, b and c (b) Only when a≠0 (c) Only when b≠0 (d) Only when at least one of a and b is non – zero

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?