John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2. What is the probability that the other kid is also a girl? Hint: It is not 1/2 as you would first think.
Be active and find the killer in the picture Riddle below.
Replace the question mark with the correct number. 2 + 2= 4 3 + 3= 18 4 + 4= 48 5 + 5= ?
I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.
I am a five-letter word under you, Remove the first letter and I am above you, Remove the second as well and I am around you. Who am I?
I have lakes with no water, mountains with no stone and cities with no buildings. What am I?
Replace the question mark with the correct number.
I look at you, you look at me I raise my right, you raise your left. What am I?
Can you spot the man between the coffee bean in the picture below ?
What word is represented by this rebus?
Move four matchsticks to the below square to form three squares?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.