I am an odd number. Take away a letter and I become even. What number am I?

What is the fastest way to double your money?

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?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

If six children and two dogs were under an umbrella, how come none of them got wet?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Spot 5 differences in two Christmas tree below:

Find the last number in the series below:

voN luJ yaM raM ---

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