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Maths Puzzle
Numerical Ability
David has 50 candies. Today he eats 1/5 of his candies, and tomorrow he eats 1/2 of what is left. What will he have by the end of tomorrow?
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3) Evaluate. 81 ÷ 9 - 16 ÷ 8
i thought was 8 but i was wrong.
two circles each of radius 5cms intersect each other. if the distance between their centres is 5 root 2 cms, find the area of the portion common to the two circles.