A boat goes 40km upstream in 8 hours and 36km downstream in 6 hours. Then what is the speed of the boat in still water? A. 6.5 km/hr B. 5.5 km/hr C. 6km/hr D. 5 km/hr

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?