A photograph of a bacteria enlarged 50,000 times attains a length of 5cm. Now, find out the actual length of the bacteria and if the photograph is enlarged 20,000 times only, what would be its enlarged length?

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?