exam Maths Puzzle Numerical Ability

There are three consecutive odd integers. Three times the largest is seven times the smallest. What are the intergers?

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exam Other Question

I would like to know if the following make a function?

(-2,2)(-1,4)(0,-6)(1,8)(1,10)
(4^-2+2^-3)^-4
Totally confused, could someone explain?