exam Maths Puzzle Numerical Ability

Find an equation for the inverse of the relation y = 6x + 3

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exam Other Question

(In a jar there are 2 red balls, 3 white balls and 1 green ball).

1.) what is the probability that a green ball will be drawn at 2nd pick?

2.)what is the probability of drawing the same color on both picks? Use the rational Zero Theorem to list all possible rational zeros for the given function.

f(x) = x to the fifth power - 5x to the second power + 5x + 3