If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

What is the largest number you can write with just 3 digits?

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

Name a key which is hardest to turn.

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?

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

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

People are waiting in line to board a 100-seat aeroplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise, they will choose an open seat at random to sit in. The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?