Two candles A and B of the same height are lighted at the same instant. A is consumed in 4h while B in 3h. Assume each candle burns at a constant rate. In how many hours after being lighted was A twice the height of B? A. 1h48min B. 2h24min C. 2div8min D. 1h58min

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?