How can you write nineteen in a manner that if we take out one, it becomes twenty?

In which direction should the missing arrow point?

Can you quickly find which two matchstick figures are identical?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What is the riddle which can be asked all day with a different correct answer each time.

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?