exam
Maths Puzzle
Numerical Ability
Solve: Use your calculator and the change of base theorem to evaluate log7(497)
Answer: log7(497)=
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exam Other Question
x^-2=4
In chemisry class, you start with 50ml of a 60% solution of copper sulfate. You will add to that a 25% solution. you need to end with 40% solution. How many of the 25% solution do