Printable Logic Grid Puzzles (Brainzilla).pdf | DocDroid - Free Printable

Let's solve this Basic 1 - Logic Grid puzzle step by step using the clues provided.

---

Given:

We have three people:
- Arnold
- Eric
- Peter

Each has:
- An age: 7, 8, or 9 years
- A birthday month: April, January, or September

We are given these four clues:

1. Peter's birthday is in April.
2. Eric is 7.
3. Arnold's birthday is in September.
4. Peter is 8.

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Step-by-step deduction:

#### From clue 2: Eric is 7
So, Eric → Age: 7 years

#### From clue 4: Peter is 8
So, Peter → Age: 8 years

Now, since ages are 7, 8, 9 and each person has a unique age:
- Eric = 7
- Peter = 8
→ So Arnold must be 9

#### From clue 1: Peter's birthday is in April
So, Peter → Birthday: April

#### From clue 3: Arnold's birthday is in September
So, Arnold → Birthday: September

Now, birthdays are: April, January, September
- Peter → April
- Arnold → September
→ So Eric must have January as his birthday

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Final Assignments:

| Name | Age | Birthday |
|--------|--------|--------------|
| Arnold | 9 | September |
| Eric | 7 | January |
| Peter | 8 | April |

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Now fill in the logic grid:

The grid has:
- Rows: Names (Arnold, Eric, Peter)
- Columns: Ages (7, 8, 9), Birthdays (April, January, September)

We'll mark the correct combinations.

#### Ages:
- Arnold → 9
- Eric → 7
- Peter → 8

#### Birthdays:
- Arnold → September
- Eric → January
- Peter → April

Now, fill the grid accordingly.

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Completed Grid:

```
Ages Birthdays
7 years 8 years 9 years April January September
------------------------------------------------------------------------------------
Arnold [ ] [ ] [X] [ ] [ ] [X]
Eric [X] [ ] [ ] [ ] [X] [ ]
Peter [ ] [X] [ ] [X] [ ] [ ]
```

> Note: The grid layout is a bit unusual because "Birthdays" appears both as column headers and row labels. But we interpret it as:
> - Top-right section: Assign birthdays to names
> - Bottom-left section: Assign ages to birthdays (but that’s redundant — likely just for consistency)

But since the main task is to match names to ages and birthdays, we can summarize:

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✔ Final Answer:

| Name | Age | Birthday |
|--------|------|--------------|
| Arnold | 9 | September |
| Eric | 7 | January |
| Peter | 8 | April |

This satisfies all clues:
1. Peter's birthday is in April → ✔
2. Eric is 7 → ✔
3. Arnold's birthday is in September → ✔
4. Peter is 8 → ✔

All assignments are consistent and unique.

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✔ Puzzle solved! You were right — it takes less than a minute!