Reason + arithmetic progression - math problems

Number of problems found: 30

  • In the
    In the arithmetic sequence a1 = 4.8, d = 0.4. How many consecutive members, starting with the first, need to be added so that the sum is greater than 170?
  • Special sequence
    What if            2×9=1            3×9=2            4×9=3            5×9=4            6×9=5            7×9=6            8×9=7            9×9=8           10×9=9    then 1×9=??? answer with solutions. .. ..
  • Harry
    Harry Thomson bought a large land in the shape of a rectangle with a circumference of 90 meters. He divided it into three rectangular plots. The shorter side has all three plots of equal length, their longer sides are three consecutive natural numbers. Fi
  • Squirrels
    The squirrels discovered a bush with hazelnuts. The first squirrel plucked one nut, the second squirrel two nuts, the third squirrel three nuts. Each new squirrel always tore one nut more than the previous squirrel. When they plucked all the nuts from the
  • Sum of the seventeen numbers
    The sum of the 17 different natural numbers is 154. Determine the sum of the two largest ones.
  • AM of three numbers
    The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers.
  • The king
    The king divided ducats to his sons. He gave the eldest son a certain number of ducats, gave the younger one ducat less, gave the other one ducat less, and proceeded to the youngest. Then he returned to his eldest son, gave him one ducat less than a while
  • Pine's forest
    There were so many pines in the forest that they were sequentially numbered 1, 2, 3,..., would use three times more digits than the pine trees alone. How many pine trees were there in the forest?
  • Find the sum
    Find the sum of all natural numbers from 1 and 100, which are divisible by 2 or 5
  • Progression
    -12, 60, -300,1500 need next 2 numbers of pattern
  • Digits
    Show that if x, y, z are 3 consecutive nonzero digits, zyx-xyz = 198, where zyx and xyz are three-digit numbers created from x, y, z.
  • Odd numbers
    The sum of four consecutive odd numbers is 1048. Find those numbers.
  • Rope
    How many meters of rope 10 mm thick will fit on the bobbin diameter of 200 mm and length 350 mm (central mandrel have a diameter 50 mm)?
  • Have solution
    The sum of four consecutive even numbers is 92. Determine these numbers.
  • Real estate
    The residential house has three entrances numbered by odd numbers arithmetic progression. The sum of the two numbers on the corner entrances is 50. Calculate the highest of these three numbers.
  • Probably member
    Look at the series 2,6,25,96,285, ? What number should come next?
  • Octahedron - sum
    On each wall of a regular octahedron is written one of the numbers 1, 2, 3, 4, 5, 6, 7 and 8, wherein on different sides are different numbers. For each wall John make the sum of the numbers written of three adjacent walls. Thus got eight sums, which also
  • Chairs
    Determine the number of seats in the seventh row and ninth row, if the 3rd row has 14 seats and in every next row of seats has five more than the previous row.
  • Students
    In the front row sitting three students and in every other row 11 students more than the previous row. Determine how many students are in the room when the room is 9 lines, and determine how many students are in the seventh row.
  • Three ints
    The sum of three consecutive integers is 2016. What numbers are they?

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Reason - math problems. Arithmetic progression - math problems.