3. Used in measuring the width of a wire, one mil is equal to one thousandth of an inch. An inch is about 2.5 cm.

Which of these is approximately equal to one mil?

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7. Lucy is asked to choose p, q, r and s to be the numbers 1, 2, 3 and 4, in some order, so as to make the value of $\dfrac{p}{q}+\dfrac{r}{s}$ as small as possible.

What is the smallest value Lucy can achieve in this way?

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8. The number *𝜲 *is the solution to the equation 3(³ˣ) = 333.

Which of the following is true?

12. A circle with radius 1 touches the sides of a rhombus, as shown. Each of the smaller angles between the sides of the rhombus is 60∘.

What is the area of the rhombus?