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Maths Puzzle
Numerical Ability
The sum of three consecutive integers is -30.
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You land on a island in which everything is 12 times a large. If you encounter a giant who is shaped exactly like you, but is 12 times as tall. then the weight of that giant is ???
1. What must be true about x, y, z and w if AB = BA for the matrices
A=|x y| ************* B=| 1 1|
|z w| ************* |-1 1|