If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?
Find The Next Number in this series. 1, 2, 6, 42, 1806 ?
What does this rebus mean? O N C E TIME
Krish is 45 years old and his mother Crishtina is 73 years old. Can you find out how many years ago, his mother was three times his age?
How many triangles can you find in this given picture?
You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?
using four eights (8) and a one (1) and one mathematical symbol , create the number 100
Find the next number in the sequence 1, 2, 6, 21, 88, __?
You walk into a room where there are three primates held in their respective cages: 1) A lion who is eating the flesh of a goat. 2) An orangutan who is playing with blocks. 3) A donkey who is sitting idle. Who is the most intelligent primate in the room?
why number 8549176320 is one of a kind?
In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
