A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

What's the best place to go shopping in the ocean?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

What is the largest number you can write with just 3 digits?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Can you fill the blank with the correct number?

6 30 870 756030 _____

Which alphabet is a part of our body?

What does below chemistry rebus means?

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