# Reason - high school - math problems

#### Number of problems found: 310

• Big factorial How many zeros end number 116! ?
• Research in school For particular research in high school, four pupils are to be selected from a class with 30 pupils. Calculate the number of all possible results of the select and further calculate the number of all possible results, if it depends on the order in which th
• Variable Find variable P: PP plus P x P plus P = 160
• Hockey Hockey match ended 8:2. How many different matches could be?
• Dice We throw five times the dice. What is the probability that six fits exactly twice?
• Competition 15 boys and 10 girls are in the class. On school competition of them is selected 6-member team composed of 4 boys and 2 girls. How many ways can we select students?
• Tricolors From the colors - red, blue, green, black and white, create all possible tricolors.
• Lottery The lottery is 60000 elk in which 6200 wins. What is the probability that the purchase of 12 elks won nothing?
• Lunch Seven classmates go every day for lunch. If they always come to the front in a different order, will be enough school year to take of all the possibilities?
• Word MATEMATIKA How many words can be created from the phrase MATEMATIKA by changing the letters' order, regardless of whether the words are meaningful?
• Fruits In the shop sell 4 kinds of fruits. How many ways can we buy three pieces of fruit?
• Bouquets In the flower shop they sell roses, tulips and daffodils. How many different bouquets of 5 flowers can we made?
• Compound interest Calculate time when deposit in the bank with interest 2.5% p.a. doubles.
• Chess How many different ways can initiate a game of chess (first pass)?
• Diofant equation 250x + 120y = 5640
• Circles How many different circles is determined by 9 points at the plane, if 6 of them lie in a straight line?
• One three We throw two dice. What is the probability that max one three falls?
• Lines In how many points will intersect 14 different lines, where no two are parallel?
• Subsets How many 19 element's subsets can be made from the 26 element set?
• Consecutive numbers Sum of ten consecutive numbers is 105. Determine these numbers (write first and last).

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