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?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

What work can one never finish?

What does it mean?

What Does this text mean:

important=important

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

What number do you get when you multiply all of the numbers on a telephone's number pad?

A man was found murdered on Sunday morning. His wife immediately called the police. The police questioned the wife and staff and got these alibis: The Wife said she was sleeping. The Cook was cooking breakfast. The Gardener was picking vegetables. The Maid was getting the mail. The Butler was cleaning the closet. The police instantly arrested the murderer. Who did it and how did they know?

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?