What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

What runs around the whole yard without moving?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

What can jump higher than a building?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?