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Maths Puzzle
Numerical Ability
A = 1/2h(B+b)
area of a trapezoid
solve for b
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book Other Question
Linear Systems
2x+3y-z=1
x-y-z=2
3x+2y-3z=3
Illustrate and explain the following operations using letters: B for black chips (+) and R for red chips (-).
(a) 8 + -3
(b) -2 + 4
(c) 3 + -5