concat strings? if i removed http/https plus formula answer accepted.
Once you remove the http/https part, those are no longer external links so there is no problem in posting them. Of course "they are no longer links" means they're not embedded in an anchor but taken as pure text, as you could see.
"Concatenate strings" is how the answer to the security question is built. In Pascal the answer to:
'12' + '34' is different to:
12 + 34. The first gives a string:
'1234' while the later gives, unsurprisingly:
46. That's the tricky part: you've to answer as a Pascal programmer, not as an accountant.