Logic Puzzle: Finding the Coins
Logical thinking is a crucial tool for solving a wide range of challenges, from everyday problems to complex scientific puzzles. By honing this skill, we can make our lives simpler and more interesting. Let’s delve into an intriguing task that requires both attention and cleverness:
Your task is to find two coins whose total value adds up to exactly 15 rubles. However, there’s a twist—one of these coins is not a 5-ruble coin.
At first glance, the puzzle seems straightforward, but a careful reading reveals that overlooking the details can lead to mistakes. Let’s break it down further:
We need to find a pair of coins that together amount to 15 rubles. The key condition is that one of these coins cannot be a 5-ruble coin.
for free
This stipulation can be misleading if not approached carefully. Think it through: it wouldn’t make sense to exclude all 5-ruble coins. The condition specifies that one of the two coins is not a 5-ruble coin, meaning the other coin can indeed be a 5-ruble piece.
Therefore, if one coin is not 5 rubles, the other could very well be. If we take a 10-ruble coin and add a 5-ruble coin to it, the condition is satisfied:
- 10 rubles + 5 rubles = 15 rubles
Example 1: Imagine you find a 10-ruble coin in your wallet. Now, you need to find another coin that is not a 5-ruble coin. It makes sense that the second coin could be a 5-ruble piece, solving the puzzle.
Example 2: What if this puzzle was based on a popular riddle involving foreign coins? Suppose you have euros. In that case, you might encounter a similar condition: “find two coins that total 1.50 euros, one of which is not a 50-cent coin.” The approach remains the same: one coin could be 1 euro, and the other could be 50 cents.
This simple task perfectly illustrates the importance of carefully reading the instructions and not overlooking the details. The takeaway is clear: never underestimate the power of thoroughly analyzing a problem before jumping into solving it. With careful attention and logical thinking, you can overcome any obstacle!
