What does below rebus means ?

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?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

You need to move three matchsticks to form three squares. Can you do it?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Can you count the number of children in the picture below

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

How is a fly different from a mosquito?