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

Find out the missing number in the picture attached:

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?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Why Wine Glass Stem is so long?

Count the number of balls in picture below: