Stronger mathematical puzzles

Puzzles and questions that contain the information and calculations require a great 
deal of speed and the ability to perform calculations accurately and quickly, which helps to stimulate the left side of the brain which handles arithmetic operations
First

These puzzles ranging level of difficulty a step-by-step




(1) Mark walked half a mile in 15 minutes what is the distance traveled by the two and a half?






(2) A man went to the market to sell a number of chickens, geese and ducks, their numbers total 135 If the
The number of times the number of chickens, ducks and geese together
The number of ducks, geese, twice the number of
How many of each type of bird?




(3) Last year, the life of Dolph six times the life of his son, and this year became the age of
Dolph five times the life of his son's age, how will each of them in the next year?




(4) If there are 10 people in a meeting and that everyone will shake hands with the rest of the group
How many total handshakes at the meeting?




(5) The length of Sarah 165 cm and weighs 130 kg system followed Sarah diet period 10 weeks
Were losing 1.5 of its weight each week how much weight will be after the end of time?




(6) that the total reconstruction of three children in one family 34 years old how much the total age after three years?
Tt

The first challenge

The challenge is simple but requires a force in the focus
Try to draw the shape in the image
Conditions
(1) that does not lift the pen from the paper
(2) that do not return the pen to you drawing a line

التراجع عن التعديلات

You must read this very well.

First, it believe it runs the more you use your mind is your chance to get to happiness. In the nature of life often determines the case of your mind if you can do something or not, regardless if you are able bodied or not. To see the athletes in each place of the world where they have all the talents of the same, but makes a hero a hero is not his qualities physical, but what is going on in his mind and is worth noting that most of the companies and products the most success and fame was in the near past are just ideas and thoughts revolve in the minds (no minds of their perpetrators). No matter what your age or level of skills or the number of qualifications obtained by the front of you is still an opportunity to gain increased power of your mind and intelligence, and this does not mean that all your time devoted to this thing, but some time each day or each week to stimulate your mind and expand his mind

Provided

Use your mind, because if they do not use will lose and if you think you have lost already The opportunity is still before you, through this blog I will put in all the information about the brain and ways of thinking and improving stages and nutritional information, which helps to gain increased level of intelligence you have and exercises that help to this
Because the mind is an important part of the human body is able to restore its activity and composition of paths is very