1. The problem is to divide a fraction by a whole number. 2. The formula for dividing a fraction by a whole number is: $$\frac{a}{b} \div c = \frac{a}{b} \times \frac{1}{c} = \frac{a}{b \times c}$$ 3. This means you multiply the denominator of the fraction by the whole number. 4. Let's solve part (a): $$\frac{1}{2} \div 2 = \frac{1}{2} \times \frac{1}{2} = \frac{1}{4}$$ So, the answer to (a) is $\frac{1}{4}$. This completes the solution for the first question. Note: There are 10 problems in total (a) through (j), but only the first is solved here as per instructions.