Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

A solo dice game is played. In this game, upon each turn, a normal pair of dice is rolled and the score is calculated not by adding the numbers but multiplying them.

In a particular game, the score for the second roll is five more than what was achieved in the first roll. The score for the third roll is six less than what was completed in the second roll. The score for the fourth roll is eleven more than what was achieved in the third. The score for the fifth roll is eight less than what was completed in the fourth.

Can you calculate the score for each of the five throws?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

When we see 2 but call 10?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside. The man said, "Oh! I am really sorry, I thought this was my room." He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man. What made her suspicious of that man? He might have been genuinely mistaken.

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Which letter of the alphabet has the most water?

Move three sticks of the spiral below to form a square.