Neena, Meena and Tina can do a piece of work in 4 days, 8 days and 6 days respectively. Neena and Tina work together for 1 day and then Neena leaves and Tina is joined by Meena to complete the work. How long does Tina work(in hours)?

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?