What is the next number in this series? 4,12,84,3612....
Buy me, smell me or deliver me, I do not change. Who am I?
What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?
Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?
A bomb exploded in a room full of married couples and no one died. How?
Can you find the hidden animal in the picture below?
Which wheel of car does not rotate when you turn your car right?
Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?
Can you guess the name of the month by looking the below rebus ?
What is the next number in the series? 15 29 56 108 208 ?
Look at this sequence from top to bottom. What is the next number in the sequence? 1 11 21 1211 111221 312211
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
