10ml 1 ml 1ml 1 ml 1 ml $2 \times 10^8$ 90 ml 99 ml 9 ml 4 ml 1 ml CFU/ml 0.1ml 0.1 ml 0.1 ml 0.1 ml 0.1 ml Total Dilution Number of Colonies Number of pipettes used: $2 \times 10^{-6}$ $2 \times 10^2$
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Step 1: Dilution = $\frac{10}{10+90} = \frac{10}{100} = 10^{-1}$ Step 2: Dilution = $\frac{1}{1+99} = \frac{1}{100} = 10^{-2}$ Step 3: Dilution = $\frac{1}{1+9} = \frac{1}{10} = 10^{-1}$ Step 4: Dilution = $\frac{1}{1+4} = \frac{1}{5}$ Step 5: Dilution = Show more…
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