Can you replace the question mark with the correct number in the below table sequence?

Decode below three cipher riddles:

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

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

Why is the Hole below a Lock?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

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

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

You are playing a game with your friend Jack. There are digits from 1 to 9. You both will take turn erasing one digit and adding it to your score. The first one to score 15 points will win the game.

Would you want to play first or second?

PS: The sum should be exactly 15.

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.