A labourer is engaged for 20 days on the condition that he will receive Rs.120 for each day, he works and will be fined Rs.10 for each day he is absent. If he receives Rs.1880 in all, for how many days did he remain absent?

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?