A number consists of two digits whose sum is 8. If 18 is added to the number its digits get interchanged. The number is? a) 53 b) 35 c) 92 d) 63

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?