Can you count the number of matches in the picture below ?

How can you tell a raw egg from a hard-boiled egg?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

How can you make number one disappear by adding something to it?

Why do we preferably have round manhole covers and not square ones?

By using all numbers, i.e. 123456789 and subtraction/addition, operators number 100 can be formed in many ways.
Example: 98 + 7 + 6 - 5 - 4 - 3 + 2 - 1 = 100

But if we add a condition use of the number 32 is a must. Then there are limited solutions.
One of such solution is: 9 - 8 + 76 + 54 - 32 + 1 = 100

Can you tell me any other solution?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?