I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

What has 13 hearts but no other organs?

How many times can you subtract the number two from the number fifty?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Forwards I am heavy, backward I am not. What am I?