Rankle #150 answer: approximate percentage frequency in the UK (rarest to commonest)

The answer

Rank by approximate percentage frequency in the UK (rarest to commonest)

1. 1AB Negative1%
2. 2B Negative2%
3. 3O Negative7%
4. 4A Positive34%

Why this order

Ranked rarest to commonest, AB Negative (1%) goes at the top and A Positive (34%) at the bottom.

The closest call is AB Negative (1%) against B Negative (2%), just one apart. That is the swap most likely to cost a point.

The biggest gap is between O Negative and A Positive, 27 % apart, so that boundary should be the easiest part of the order to get right.

These are the figures the game reveals after you submit. They are rounded; only the order is scored.

Difficulty: hard, judged by how close the tightest pair is.

How it was scored

right slot, one place out, two or more out. The score is how many items sit in the right slot, and only 4/4 is a win. Full rules on the how to play page.