exam Maths Puzzle Numerical Ability

Is the following statement true or false and why?

Three noncollinear points determine two lines.

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exam Other Question

I greatly need your help in solving another statistics problem, please? Thanking you in advance for your assistance in this matter!
A coin was flipped 60 times and came up heads 3
Construction: Concrete weighs 150 lb/cu ft.

What is the weight of a concrete wall 18 ft long, 4 ft 6 in high and 8 in thick?