You need to arrange three 7 and mathematical symbols to form number 1?

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

Replace the question mark with the number below given a simple math problem.

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Next Number in the Series,

5, 16, 49, 104, ?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

I am a three digit number.
My tens digit is five more than my ones digit.
My hundreds digit is eight less than my tens digit.
What number am I?

How many Watermelons are there in the below picture?

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

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?