## Two jugs riddle of delivering 1 quart milk each

A milkman has to deliver 1 quart of milk each to a 4 pint and a 5 pint jug from his two 10 gallon filled up milk cans. Time to solve 20 mins.

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For each one, first the puzzle is posed for you to solve within a recommended time. A detailed systematic solution then follows.

Matchstick puzzles, riddles, math puzzles, logic puzzles, river crossing puzzles, ball weighing puzzles are some of the categories.

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**Challenging brain teasers with solutions: Long list.**

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Submitted by Atanu Chaudhuri on Mon, 24/05/2021 - 23:15

Submitted by Atanu Chaudhuri on Mon, 24/05/2021 - 13:08

Peter and Paul are always lying and truth-telling twins. You ask one of them, "Is Paul the lying one?" And he answers, "Yes." Whom did you ask the question?

Submitted by Atanu Chaudhuri on Mon, 26/04/2021 - 02:17

Airplane Riddle of Flying Around the World: One airport can be used by airplanes. An airplane carries enough fuel to fly halfway across the globe...

Submitted by Atanu Chaudhuri on Thu, 14/01/2021 - 23:47

How many addition signs should be put between digits of 987654321 to equal 99? Where should they be placed? Time to solve 10 minutes.

Submitted by Atanu Chaudhuri on Mon, 11/01/2021 - 23:54

Cherry in the glass puzzle: Move 3 matchsticks to take the cherry out of wine glass. Second puzzle is harder: Move 2 matchsticks to take the cherry out.

Submitted by Atanu Chaudhuri on Sun, 10/01/2021 - 22:10

Move 2 matches to make 7 squares and move 8 to make 6 squares. Total time to solve the pair of challenging matchstick puzzles is 20 minutes.

Submitted by Atanu Chaudhuri on Mon, 04/01/2021 - 23:58

Matchstick tower puzzle: Move 4 matches to invert the tower. This is a different type of matchstick puzzle that is challenging to solve in 20 minutes.

Submitted by Atanu Chaudhuri on Tue, 22/12/2020 - 23:37

9 squares puzzle: Find area of rectangle with 9 gradually smaller squares inside it and the side length of smallest square 3 units. Time 30 minutes.

Submitted by Atanu Chaudhuri on Thu, 17/12/2020 - 23:30

Surely you can solve the 3 digit number puzzle in 20 mins if you approach the puzzle with systematic problem solving techniques.

Submitted by Atanu Chaudhuri on Wed, 16/12/2020 - 23:52

Find area of equilateral triangle if side length of smallest of 3 squares inscribed in the triangle on top of each other is 1. It needs a bit of math.