Can you identify the hidden rebus in the image below?

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

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Can you count the number of squares in the given picture?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

A man has eighty-one cows ( numbered 1,2,3...81 as such). The beauty is that cow no. 1 gives 1ltr of milk, cow no. 2 gives 2ltrs of milk and so on. The man wants to equally distribute the cows among his nine sons so that each one of them gets the same quantity of milk.

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

I know a nine-letter word having only one vowel.
Do you ?