(0.2u2 - 0.9v)(0.2u2 + 0.9v) = (a) 0.04u4 + 0.81v2 (b) 0.04u4 - 0.36u2v - 0.81v2 (c) 0.04u2 - 0.81v2 (d) 0.04u4 + 0.36u2v + 0.81v2
= ______. A 1 B 2 C D 3
If , then the value of and respectively, are ______. A B C D
How many angles in the given figure are less than a right angle? A 2 B 3 C 4 D 5
What fraction of the figure is shaded? A B C D