The length of a room is 5m, breadth is 3.5m and height is 4m. Find the total expenditure of whitewashing on the four walls and roof at the rate of 15 per square meter. (Answer correctly up to 1 decimal place)

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?