exam Maths Puzzle Numerical Ability

Using a calculator, find log 1000 where log means to the base of 10. How do I solve this?

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exam Other Question

How many solutions are there to the system
x - 4y = 2
x-4y = 7 To me, this looks like a question not to hard to solve, but yet I am stuck on it. It asks, in Parallelogram ABCD, M