Keyboard words are not in alphabetical order, Why?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

Why 1729 is a magic number? Answer Logically.

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

Which city is three-fifths chick two third cat and 50% goat?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Find the missing number in the image below.