exam Maths Puzzle Numerical Ability

The larger of two supplementary angles measures 20 degrees less then 4 times the measure of the smaller, how do i figure out both of the angle measurements?

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exam Other Question

Permutations are just an application of fundamental counting principle. Combinations are just a application of Permutations and the counting principle. So would you say that Combinations are also just an application of the counting principle? Perform the indicated operation.

(3m-4)(3m+4)