I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

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

What is the next number in this series?

4,12,84,3612....

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

At a bar, three friends, Mr Green, Mr Red and Mr Blue, were having a drink. One man was wearing a red suit; one a green suit; and the other a blue suit. 'Have you noticed,' said the man in the blue suit, 'that although our suits have colours corresponding to our names, not one of us is wearing a suit that matches our own names?' Mr Red looked at the other two and said, 'You're absolutely correct. What colour suit is each man wearing?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

What can you serve, but never eat?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Can you find a number that lies one third of the distance between 1/3 and 2/3?