Inventors And Discoverers C/D 31/05

[Peasblossom]

18. O, where did you first appear (11)
Any help gratefully appreciated

[straydog]

Good morning Peasblossom. This is the 8th time you’ve asked a question from this quiz. It would be a lot easier for us all if you entered them all on the same thread

[Peasblossom]

Thank you for your advice straydog maybe I won't bother asking anymore

[mallyh]

i suggested Landsteiner who found the blood groups .please don't leave AB x

[roopower]

I found this quiz almost impossible and gave up. I admire your persistence. Don't take umbrage at straydogs suggestion of putting your questions under one post. It is a lot easier for you and anyone trying to help .

[Peasblossom]

I do struggle I'm in my 70's and I was pleased to learn how to upload my pictures which was trial and error hence so many threads thank you mallyh and roopower for your kind words

[bows13]

Yes please stay we are only to pleased to help

[Peasblossom]

Thank you bows13

[Fibonacci]

Yes do stay but also take note of straydogs comment,it is so much easier if all questions on a quiz are in one post. Good Luck with this quiz. Let us know how you do when the results are revealed.

[Peasblossom]

Will do Fibonacci and thank you

[elliemay1]

Please stay Peasblossom, we love helping out when we can and I'd miss your lovely avatar!

[Cornishboy]

Peasblossom I know how you feel. I am in my eighties and finding this quiz difficult . Don't give up . I am afraid I cannot help you with your queries but I am wondering if question 18 is letter O or a zero. I am struggling with nos 43 and 55.
Good luck.

[roopower]

Just a thought, do you know setter of this quiz made several mistakes so posted it again with mistakes rectified?