exam Maths Puzzle Numerical Ability

What is the least number of additional walls needed to complete a stair-step pattern if you already have 350 walls?

- 4 walls have 1 square per side

- 10 walls have 2 squares

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exam Other Question

Expression 1: 2log(x+1)
Expression 2: 2log(2+x)
Expression 3: 4+log2+3logx

How would the sum of these 3 expressions be written as a single logarithm?

thanks in advance Can someone please help me out with this: I am supposed to find the length x. Express your answer in simplified radical form. the triangle is 51 ft on one side, 45 ft on the other side, then there is x.