Can you replace the question mark with the correct number?

Can you find the key in the picture below?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Complete the table series riddle by finding the number that can replace "??".

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?

Check out the number list below and find what number comes next in the sequence.

111 , 113 , 117 , 119 , 123 , 137 , ?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A Monkey, a squirrel, and an Eagle are racing to the top of the mango tree. Assuming all these animals are in perfect shape, Which animal will reach to Banana first?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?