A sum of money is invested at 10% per annum compounded half yearly. If the difference of amount at the end of 6 months and 12 months is Rs.189, find the sum of money invested.

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?