Four of the six numbers 1867, 1993, 2019, 2025, 2109 and 2121 have a mean of 2008. What is the mean of the other two numbers: (a) 1994 (b) 2006 (c) 2022 (d) 2051

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?