Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

what does the below math rebus puzzle mean?

Find the next number in the series.
1 10 24 43 67 ?

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?

Can you decipher the two rows to find the hidden word?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?