exam Maths Puzzle Numerical Ability

7/2x+1/2x=3x+3/2+5/2x

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exam Other Question

Ladder Height.
A 10-m ladder is leaning against a building. The bottom of the ladder is 5m from the builder. How high is the top of the ladder? Diameter of a circle. If the diameter of a circle is 13 x 10ˉ�� meters, then what is the radius?