### Clue 1

These stamps seem awful square...

### Clue 2

And they all seem to depict roots...

### Solution

Each square stamp shows a different kind of root, and a perfect square number. Take the square root of each stamp, and in order from left to right they read '853'.

### Clue 3

Square stamps, showing roots...Square...Roots...

### Clue 4

Three stamps for three digits.

### Clue 1

Is there anything awry amongst these digits of pi?

### Clue 2

So many digits...are they all correct?

### Solution

Some digits of Pi have been replaced by other numbers! In order, translated alpha-numerically, the substituted numbers spell 'Numerology'.

### Clue 3

Some of the digits shown seem a little off...perhaps a comparison is in order.

### Clue 4

Check carefully, some changes are two digits at a time.

### Clue 5

Now that you know what numbers are off, can you turn that into a word?

### Clue 1

Simpler than it may seem...

### Clue 2

Remember, every line counts.

### Solution

The sketched lines and shapes correspond via number of lines to their numeric equivalents in the alphabet. Left to right, they spell 'Baghdad'.

### Clue 3

The answer will shape-up, letter by letter.

### Clue 4

Seven sketches, seven letters...

### Clue 5

D seems like a very square sort of letter.

### Clue 1

These stamps seem awful square...

### Clue 2

And they all seem to depict roots...

### Solution

Each square stamp shows a different kind of root, and a perfect square number. Take the square root of each stamp, and in order from left to right they read '853'.

### Clue 3

Square stamps, showing roots...Square...Roots...

### Clue 4

Three stamps for three digits.