# Reason - 9th grade (14y) - math problems

#### Number of problems found: 457

• Coins On coins found was stated that from the year 87 BC. It is right?
• One three We throw two dice. What is the probability that max one three falls?
• Pair They have together 39 years - he has 2 times as she was when he was equal as she has today ....
• Seating How many ways can 6 people sit on 6 numbered chairs (e. g. , seat reservation on the train)?
• Two integers Two integers, a and b, have a product of 36. What is the least possible sum of a and b?
• Six on dice What is the probability that when throwing two dice will fall at least one six?
• Probability How probable is a randomly selected three-digit number divisible by five or seven?
• Divisibility Write all the integers x divisible by seven and eight at the same time for which the following applies: 100
• Chess How many different ways can initiate a game of chess (first pass)?
• Unknown number 23 Find 2/3 of unknown number, which is two thirds of the 99.
• The dice What is the probability of events that if we throw a dice is rolled less than 6?
• Two-element combinations Write all two-element combinations from elements a, b, c, d.
• Tricolors From the colors - red, blue, green, black and white, create all possible tricolors.
• Probably member Look at the series 2,6,25,96,285, ? What number should come next?
• Years Susan is 3 years and as she will be old as Teodor now him will be 11. How old is Teodor today?
• Three numbers What is three numbers which have the property: the sum of the reciprocals of the first and second numbers is 12/7, the first and third 11/24 and the second and the third 3/8.
• Combinations of sweaters I have 4 sweaters two are white, 1 red and 1 green. How many ways can this done?
• Three ints The sum of three consecutive integers is 2016. What numbers are they?
• Family Mom is 42 years old and her daughters 13 and 19. After how many years will mother as old as her daughter together?
• Lines In how many points will intersect 14 different lines, where no two are parallel?

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