Which one of the following is not true? A. 2–√ is an irrational number B. If a is a rational number and b√ is an irrational number then ab√ is irrational number C. Every surd is an irrational number D. The square root of every positive integer is always irrational.

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?