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Monthly Archive - October 2013brain teasers, puzzles, riddles, mathematical problems, mastermind, cinemania... These are the tasks listed 1 to 10. |
On which finger will she stop?
A little girl counts from 1 to 1000 using the fingers of her left hand as follows. She starts by calling her thumb 1, the first finger 2, middle finger 3, ring finger 4, and little finger 5. Then she reverses direction, calling the ring finger 6, middle finger 7, the first finger 8, and her thumb 9, after which she calls her first finger 10, and so on. If she continues to count in this manner, on which finger will she stop? Calculate the number 100
NUMBERMANIA: Calculate the number 100 using numbers [1, 1, 4, 2, 20, 75] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. Find the area of the shaded figure
Express result to the accuracy of 2 decimal. 
The Skin Graft
A married couple was in a terrible accident where the man's face was severely burned. The doctor told the husband that they couldn't graft any skin from his body because he was too skinny. So the wife offered to donate some of her own skin.
However, the only skin on her body that the doctor felt was suitable would have to come from her buttocks.
The husband and wife agreed that they would tell no one about where the skin came from, and they requested that the doctor also honor their secret. After all, this was a very delicate matter.
After the surgery was completed, everyone was astounded at the man's new face. He looked more handsome than he ever had before! All his friends and relatives just went on and on about his youthful beauty!
One day, he was alone with his wife, and he was overcome with emotion at her sacrifice. He said, "Dear, I just want to thank you for everything you did for me. How can I possibly repay you?"
"My darling," she replied, "I get all the thanks I need every time I see your mother kiss you on the cheeks.
Word Association: BOX, INSTRUMENT, GENRE, SOUND
Word Association: BOX, INSTRUMENT, GENRE, SOUND Which number should replace the question mark?
FUNNY MATH: Which number should replace the question mark? Word Association: FAST, SOUL, ORGANIC, CHINESE
Word Association: FAST, SOUL, ORGANIC, CHINESE Which number should replace the question mark?
FUNNY MATH: Which number should replace the question mark? Calculate 9*(29+321+151)
FUNNY MATH: Calculate 9*(29+321+151) :) Find the right combination
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. Find the area of the shaded figure
Express result to the accuracy of 2 decimal.