What number do you get when you multiply all of the numbers on a telephone's number pad?

You stand in front of two doors. A guard stands next to each door. You know the following things: one path leads to paradise, the other leads to death. You cannot distinguish between the two doors. You also know that one of the two guards always tells the truth and the other always lies. You have permission to ask one guard one question to discover which door leads to paradise. What one question would you ask to guarantee you enter the door to paradise?

What four weights can be used to balance from 1 to 30 pounds?

why number 8549176320 is one of a kind?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Which is the smallest number that you can write using all the vowels exactly once?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

John's five friends Rachel, Jacob, Phoebe, Joey and Chandler live on the same road.

Rachel lives in the house: A, Jacob lives in the house: B, Phoebe lives in the house: C, Joey lives in the house:D, Chandler lives in the house: E

Mathematically
B*C*D = 1260
B + C + D = 2E
2A = E

The road numbers run from 2 to 222.

Can you tell me the house number of each of John's friends?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?