A window is in the form of a rectangle surmounted by a semi-circular opening. The total perimeter of the window is 10m . Find the dimensions of the window to admit maximum light through the whole opening.

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?