What number comes next in the series?
5 15 5 18 5 24 14 20 _
I am an odd number. Take away a letter and I become even. What number am I?
How many times can you subtract the number 5 from 25?
In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?
Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?
Which of the following words don't belong in the group and why?
CORSET, COSTER, SECTOR, ESCORT, COURTS
There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?
If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?
If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?
You knock a Table over in the library, and suddenly 20 eyes are looking at you.
Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?
? : 3839 :: 11 : 1209
In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.
