book Maths Puzzle Numerical Ability

Solve:

3x
1 1 = 2

(the three x and 1 1 are inside absolute value brackets)

Read Solution (Total 0)

book Other Question

Find two consecutive whole numbers such that the sum of their squares is 130

n(n+2)=130?
To expand the logarithmic expression as much as possible:

In x^3/(x-3)^2

Solve:
log10 (x-30)= 3- log10 x