exam Maths Puzzle Numerical Ability

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3-a-4/a+3=a^2-2/a+3

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exam Other Question

A card is drawn frim a standard deck of cards. What is the probability that the card is an ace or a red card? a swimming pool has the shape of a semi-circle. if the area is 308 square meters, find the perimeter of the pool.[pi=22/7]