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Here is a rectangle made out of 2x1 dominoes:

2x1 dominoes arranged into a rectangle

It can be divided along a line into two smaller rectangles:

Splitting the big rectangle into two smaller rectangles

What is the smallest (in area) rectangle of (edit) multiple 2x1 dominoes that cannot be split along a line into two smaller rectangles?

Here is a rectangle made out of 2x1 dominoes:

2x1 dominoes arranged into a rectangle

It can be divided along a line into two smaller rectangles:

Splitting the big rectangle into two smaller rectangles

What is the smallest (in area) rectangle of 2x1 dominoes that cannot be split along a line into two smaller rectangles?

Here is a rectangle made out of 2x1 dominoes:

2x1 dominoes arranged into a rectangle

It can be divided along a line into two smaller rectangles:

Splitting the big rectangle into two smaller rectangles

What is the smallest (in area) rectangle of (edit) multiple 2x1 dominoes that cannot be split along a line into two smaller rectangles?

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Owen
Owen
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  • 13
  • 17

One rectangle, indivisible

Here is a rectangle made out of 2x1 dominoes:

2x1 dominoes arranged into a rectangle

It can be divided along a line into two smaller rectangles:

Splitting the big rectangle into two smaller rectangles

What is the smallest (in area) rectangle of 2x1 dominoes that cannot be split along a line into two smaller rectangles?