exam Maths Puzzle Numerical Ability

Hello and thank you for being available.. Can you help me? Caan you simplfy or breakdown how to get there for me?

What are the two consecutive odd numbers of 56?

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exam Other Question

The variables x and y vary inversely. When x is 10 and y is 7.

If x is 5, then y is ___ ?



I do not understand how to set this up?
4 2 2
------ + ------- - ----- =
3xyz2 xyz 3z2