exam Maths Puzzle Numerical Ability

Graph each line using its y-intercept and slope:
3x - 2y = 10

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exam Other Question

Tell whether each of the following is true or false for all sets, A, B, or C. If false give a counterexample.

(A-B) U A= A(-B) U (B-A)
i know its false but how would i do a co How many numbers between 100 and 200 (Inclusive) have an even number of factors?

Is there a formula for figuring this out or some sort of pattern? Thankyou