exam
Maths Puzzle
Numerical Ability
Instructions: solve each system by the eliminsation method.
What is the solution for x-y=4
x-y=-3
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exam Other Question
sin^2x+sinx-1=0
It is estimated that the earth is looseing 4000 species of plants and animals a year if S represents the number of species living last year how many species are on earth this year?