Imagine an HIV test that is 95% accurate (false positive rate of 5%) and around 2% of the tested population is infected with HIV. What is the probability that you actually have HIV when your test comes back positive?
A word with horizontal symmetry is one whose letters are a mirror image of themselves. If you drew a horizontal line across the word and folded it over, it would overlap on itself. For example, EXCEEDED and ICEBOX have horizontal symmetry, but VERTICAL and SIMPLE do not.
What is the longest word with horizontal symmetry?
A seven letter word that has T as the second letter, A as the fourth letter and S as the sixth letter. Girls love it, boys use it, parents hate it and it scares animals. Hint: It’s a German word.
A persistent puzzle solver will discover that no English word satisfies the letter requirements, to say nothing of the loving, using, hating or being scared requirements. I found three German words that work:
1) strafst 2) strapse 3) strauss
1 and 3 mean punish and bouquet respectively. I couldn’t find a definition for strapse. Punish is the likely answer. Girls love to punish boys, boys use punishment as well, a good parent hates to use punishment and animals are scared of it. I don’t know of any animals that are scared of a bouquet, though a bouquet fits as something girls love and boys use.
If you look you cannot see me. If you see me you cannot see anything else. I can make anything you want happen, but later everything goes back to normal.