book Maths Puzzle Numerical Ability

Please help!!
(1/64)^2/3=?

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book Other Question

how do you work this problem?

solve the matrix equation for x and y.

[1 14] [y-9 14]
[-5x 10]= [5 10]
Please explain how to get the answers to the following problems

-(-4)+10

-12+[-(-5)]
I am having problems working these type problems.Please explain them to me.