exam Maths Puzzle Numerical Ability

29. Write a rule for the function:x=2,3,7,10 y=8,7,3,0

30. Write a rule for the function: x=0,4,8,12 y=5,7,9,11

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exam Other Question

A number minus two is equal to that number times the reciprocal of two. What is the number? I know it sounds easy but I am STUCK on it!! One number is 5 greater than another number. If The sum of their squares is 5 times the square of the smaller number, what are the numbers?