Daily Math Puzzle: 2026-06-26
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2026-06-26
At 'Deal-a-Day Supermarket,' a special promotion is running at Checkout #5. Every 5th customer who completes their purchase at Checkout #5 receives a free reusable shopping bag. The customer count for this promotion resets to 1 precisely at opening time each morning. Today, you are the third person to arrive and join the line at Checkout #5 (meaning there are two people ahead of you). What is the probability that *you* will receive a free shopping bag?
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Solution
0 — The promotion states that 'Every 5th customer' receives a bag. This means specifically customers #5, #10, #15, and so on, who check out at that till. The customer count resets to 1 at opening time. Since you are the third person to arrive and join the line, you will be the 3rd customer of the day to check out at Checkout #5. As 3 is not a multiple of 5, you will not be one of the customers selected to receive a free bag. Therefore, the probability that you receive a bag is 0.
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