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Maths Puzzle
Numerical Ability
What is 8/-3 - -7/5? I think I know what it is but I am not sure.
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4. Stan and Hilda can mow the lawn in 40 minutes if they work together. If Hilda works twice as fast as Stan, how long would it take Stan to mow the lawn alone?
5. A commercial je
How many sets of three integers are there in which the sum of the three integers does not equal three times the middle integer?