Tips for Washing Produce. Keep in mind that produce is a raw product, grown in dirt, which is handled by lots of people before it ever gets into your kitchen. Bacteria can be transferred from dirt residue, or from any of the people handling the produce before and after it arrives in the supermarket. To ensure the safety of your produce, including organic produce, it's important to wash it well, using proper technique, experts say.
Devlin explains: The birthday problem asks how many people you need to have at a party so that there is a better-than-even chance that two of them will share the same birthday. Most people think the answer is 183, the smallest whole number larger than 365/2. In fact, you need just 23.
Here are a few lessons from the birthday paradox: 1  sqrt(n) is roughly the number you need to have a 50% chance of a match with n items. sqrt(365) is about 20. 2  Even though there are 2128 (1e38) GUIDs, we only have 264 (1e19) to use up before a 50% chance of collision. And 50% is really, really high.