exam Maths Puzzle Numerical Ability

18/c = 2/7

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exam Other Question

Please help me find a general term a sub n for the sequence 1/3, 2/4, 3/5, 4/6,... 1)Find x ito 4 decimal places: Ln x-4ln=Ln(5/x)
2)if 4^x=4^2 then x= ?
3)if f(x)=sqrtx-2 then f^-1(x) is equal to?
4)what are the possible real zeros of the polynomial:6x^3+13