I never was, am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all, To live and breathe on this terrestrial ball. What am I?
I hear a lot And I say a lot Few ever look for me And even fewer ever hear me I hide in plain sight Whether its day or night To help is all I want But most like to bend me And as if they had a wand Never again shall anyone find me They do this to control Without realizing the high price of a soul But when I’m least expected They’d rather be protected For there shall be no place to hide What am I?
The next number in the series counts the previous numbers. Thus the first number is 1, which is one 1, or 11. To describe 11, you have two 1’s, or 21. Now you have one 2 and one 1, so the next number is 1211. The solution is to continue describing the previous number using only numbers.
I’m a medication with three parts. The first part is the surname of someone who has been a Mary and a Maria. The second part is a vital organ and the last is plentiful in the ocean.
Andrews Liver Salts, an antacid. Julie Andrews played the role of Mary Poppins in the movie of the same name, and Maria in the Sound of Music. It’s tough to live without a liver and a taste of the ocean always includes a touch of salt.
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?