What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

What can you catch but never throw?

With the help clues provided in the image, can you find the 5 digit key?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

The current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

Spot 5 differences in two Christmas tree below:

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.