exam Maths Puzzle Numerical Ability

Angles A and B are complementary angles. Determine the measures of Angle A and B if angle A is four times the size of angle B.

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exam Other Question

can the sum of 9 odd numbers be 60? Please help me find the answer by multiplying using the vertical method.

(2r - 3s)(4r^2 + 6rs + 9s^2)

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