Count the squares in the matchstick puzzle below?
There are six people in a family namely M, N, O, P, Q and R. R and O are brother and sister. N is the brother of Q's husband. P is the father of M and grandfather of R. How many male members are in the family?
What number should come in place of the question mark below?
All of Jacob's shoes are red except two. All of Jacob's shoes are green except two. All of Jacob's shoes are yellow except two. How many shoes does Jacob have?
Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat. How?
What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?
He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?
A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?
Can you find the odd number in the following five choices? 1) 482636 2) 259807 3) 865195 4) 104739 5) 391744
Every words stands for unique digit that makes the arithmetic equation true SEVEN + SEVEN + SIX = TWENTY. What are the digits ?
Can you solve below mathematical equation? 2^1234 - 2^1233
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
