A corn cob, shaped somewhat like a cone, has the radius of it'd broadest end as 2.1cm and length as 20cm. If each 1cm sq. of the surface of the cob carries an average of four grains, find how many grains you would find on the entire cob?

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?