Orthocenter of the triangle formed by the lines x+y=1 and xy=0 is (a) (0, 0) (b) (0, 1) (c) (1, 0) (d) (-1, +1)

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?