Four girls helped their grandpa collect apples. Each girl used a basket of a different color and collected a certain amount of apples. How many apples are in the green basket?

- 1. Rachel used the white basket.
- 2. Rachel carried 4 more apples than the girl that used the red basket.
- 3. The girl that carried 20 apples is either the girl that used the red basket or the girl that used the white basket.
- 4. Gina carried 4 more apples than Berenice.
- 5. Berenice used the blue basket.

- Start by reading all the clues;
- Find the most basic clues and use the grid to mark them on it;
- Use logic deduction to find propositions that are not explicit;
- Click on a clue to mark it as used;
- The answer table is filled automatically.

See our logic grid puzzles list.

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If, after reading the instructions, you still don't understand how to play, try playing one of these simpler logic grids puzzles. They are "very very easy".

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Logic grid puzzles, often called logic puzzles or logic problems, have roots that can be traced back to the field of mathematical logic and philosophy. They gained mainstream popularity in the mid-20th century, particularly through the work of Raymond Smullyan, an American mathematician and logician, who contributed a range of puzzles and problems designed to challenge logical reasoning skills. Some of the earliest forms of these puzzles can be found in literature and games designed to test the deductive reasoning abilities of individuals. Over time, these puzzles have evolved, incorporating more variables and complexity.

The commercialization of logic grid puzzles saw a significant uptick with the advent of puzzle books and magazines dedicated solely to these types of problems. Moreover, the rise of the internet and digital platforms has made it easier for enthusiasts to access and solve logic grid puzzles, contributing to their global popularity. Today, they are used not just for entertainment but also as educational tools, for cognitive development, and even in some recruitment processes to evaluate problem-solving abilities.

Logic grid puzzles serve as a mental workout, offering various cognitive benefits. They primarily improve deductive reasoning skills, which is the ability to draw specific conclusions from general information. By regularly engaging with these puzzles, individuals can also enhance their attention to detail, analytical thinking, and problem-solving skills. These cognitive improvements are beneficial for both children and adults, aiding in better performance in academic settings and in the workplace.

Additionally, logic grid puzzles can have a positive impact on memory retention and information recall. Working through the clues and making connections between different variables often involves holding multiple pieces of information in the mind simultaneously, which exercises working memory. This form of mental engagement can lead to improvements in other memory-dependent tasks and activities. Overall, the act of solving logic grid puzzles can be seen as a comprehensive brain exercise that enhances various cognitive functions.

In educational settings, logic grid puzzles serve as a versatile tool for developing a range of skills in students. They are often integrated into the curriculum as supplementary material or used in extracurricular activities to promote logical thinking, critical analysis, and deductive reasoning. These puzzles encourage students to approach problems systematically, breaking them down into smaller, more manageable tasks, and then synthesizing the data to arrive at a conclusion. This methodical approach to problem-solving is not only applicable in mathematics but also in subjects like science, social studies, and language arts, making logic grid puzzles interdisciplinary in nature.

Moreover, these puzzles have the potential to make learning more engaging. Teachers often use them as a break from routine classroom activities or as part of team-building exercises. The interactive and challenging aspects of logic grid puzzles can capture students' interest and motivate them to think deeply. This engagement not only enhances the specific skills required to solve the puzzles but also contributes to a more positive and active learning environment. As educational strategies increasingly emphasize critical thinking and problem-solving abilities, the role of logic grid puzzles in education is likely to continue growing.