A plane crashed between the border of Mexico and America. Where do you bury the survivors?

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?

How many triangles can you count in the figure given?

Count the squares in the matchstick puzzle below?

Can you name an animal whose killing cannot be performed without spilling your own blood?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

A man dies of old age on his 25 birthday. How is this possible?

Why is a river so rich ?

What is the next number in this series?

4,12,84,3612....

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?