Mathematical Fraction
520.2K Views
Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets () 
( 7 + 7) * (7 + 1/7)
–> 14 * (50/7)
–> 2 * 50
–> 100
How is (7 + 1/7) = (50 / 7) ??
Your Answer
More puzzles to try-
Three Lives
He has three lives, Gentle, enough to soothe the skin, Light, enough to care the sky, Hard enough to crack ...Read More »Cat and Rat Puzzle
If Three Cats Kill Three Rats In Three Minutes. How Long Will it take for one hundred cats to kill ...Read More »Numerals assignment in funny way riddle
If 1 = 8 2 = 16 3 = 24 4 = 32 5 = 40 6 = 48 7 ...Read More »Robots on a line puzle
Two robots are placed at different points on a straight line of infinite length. When they are first placed down, ...Read More »Practising without getting tired
A man goes down to the beach and starts walking on the beach, he has to get to the circus ...Read More »The Parrot’s Problem
A pet store has a parrot that repeats everything it hears. The store owner puts a “No Talking” sign in ...Read More »Century’s final day riddle
Assuming year 1 started on Sunday, it can be shown that only some days are possible as a century’s final ...Read More »Turn again
It turns around once, what is out will not get in. It turns around again, what is in will not ...Read More »Smoking cigarettes Puzzles
One man has a habit of smoking cigarettes regularly. He has a strange habit of smoking even filters of the ...Read More »Hard Series
What is the next number in this series? 4,12,84,3612….Read More »Count Apples Basket Puzzle
In a basket of apples, when counted in twos, there was one extra when counted in threes, there were two ...Read More »Determining a hidden digit
Think of a positive integer, call it X. Shuffle the decimal digits of X, call the resulting number Y. Subtract ...Read More »Nobody in back
Look in my face, I am somebody; Look in my back, I am nobody. What am I ?Read More »1 dollar = 100 cent
1 dollar = 100 cent = 10 cent x 10 cent = 1/10 dollar x 1/10 dollar = 1/100 dollar ...Read More »Chemical Mixture Weight
John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the ...Read More »Dog’s mom Name
A dog had three puppies, named Snophy, Topsy and Jorden. What was the mothers name?Read More »Car and Ice Cream
John bought a new car. He has a habit of eating ice cream from a particular ice cream shop while ...Read More »Sum of cube of its digits puzzles
371 is a number that can be expressed as the sum of cube of its digits, i.e., 371=3^3 + 7^3 ...Read More »I am in the Earth and the heaven. What am I?
I am the first in the earth. Second in heaven. I appear twice in a week, though you can only ...Read More »Jumping from 23rd floor
A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and ...Read More »
Accenture Interview PuzzlesAdobe Interview PuzzlesAge RiddleAkbar Birbal PuzzlesAlgorithm PuzzlesAlphabet riddleAmazon Interview PuzzlesAnalytical MathematicsAptitude PuzzleBank PuzzlesBetting PuzzlesBrain TeasersCalendar PuzzlesCards PuzzlesChess Board PuzzleChess PuzzlesChristmas Puzzlecipher PuzzleCivil Services PuzzleClock time puzzleCognizant Interview PuzzlesCoins PuzzleComputational PuzzleconundrumCoronavirus PuzzleCoupondunia Interview PuzzleCritical Thinking Puzzledata analyticsData Structure Interview QuestionsDecode PuzzleDetective PuzzlesDice PuzzleDictionary Riddlesdifficult riddleEasy Math puzzlesEasy puzzlesEinstein puzzleEnglish RiddleFamily Tree Puzzlefamous puzzleFill in the blanks riddlesFinding Killer RiddlesFlipkart interview puzzlesFunny RiddlesGeneral KnowledgeGeographical PuzzleGoogle Code Jam 2014Google Interview PuzzlesGRE PuzzleHard Puzzle
