Without looking at a calendar, within a minute name, a boy's name using 5 consecutive 1st letters of 5 consecutive months

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Count the squares in the matchstick puzzle below?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

What does below rebus means ?

What seven-letter word has hundreds of letters in it?

This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

The answer I give is yes, but what I mean is no. What was the question?