Count the number of balls in picture below:
What seven-letter word has hundreds of letters in it?
What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
Can you make a six-letter word using the letters N, A and B ?
What English word has three consecutive double letters?
what does this picture(rebus) riddle means ?
What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?
Can you decipher the two rows to find the hidden word?
Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?
I am white when I am dirty, and black when I am clean. What am I?
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.