Each of the figures below is made up of identical 2 cm squares. Which one of the figures has the greatest perimeter?
Takes a little time but logical reason is behind it...
If + = 19 kg, + + + + + + + = 74 kg and - = 9 kg, then the weight of and respectively is
A 4 kg, 6 kg
B 3 kg, 5 kg
C 6 kg, 4 kg
D 5 kg, 3 kg