exam
Maths Puzzle
Numerical Ability
Simplify sqrt(75a^2) my answer is 0
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exam Other Question
(square root of 3 + 3)(square root of 7 - 2)
The bones of a prehistoric man found in the desert of new mexico contain approximately 5% of the origonal amount of carbon-14. If the half life of carbon-14 is 5600 years, approxim