A rectangular water tank measuring 80cm *60cm*60cm is filled from a pipe of Cross section area 1.5 cm^2, the water emerging at 3.2 m/s. HOW long does it take to fill tank?

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?