Power - examples

  1. One half
    one_half One half of ? is: ?
  2. Cube diagonal
    cube_diagonal Determine length of the cube diagonal with edge 91 dm.
  3. Z9-I-4
    numbers_30 Kate thought a five-digit integer. She wrote the sum of this number and its half at the first line to the workbook. On the second line wrote a total of this number and its one fifth. On the third row she wrote a sum of this number and its one nines. Fi
  4. Compare II
    powers Which of the numbers 158, 815 is greater?
  5. Area codes
    us_codes How many 6 digit area codes are possible if the first number can't be zero?
  6. Circle chord
    circleChord What is the length d of the chord circle of diameter 58 mm, if distance from the center circle is 24 mm?
  7. Powers
    math_fun Is true for any number a,b,c,d equality:? ?
  8. Sale
    sale_percent If the product twice price cut by 20%, what percentage was price cut in total?
  9. Compare:
    nevim.JPG What is bigger? ?
  10. Subsets
    1venna_sets How many is subsets of set ??
  11. Proof I
    ithinkiam When added to the product of two consecutive integers larger one, we get square larger one. Is this true or not?
  12. Machine
    machine Price of the new machine is € 56000. Every year is depreciated 16% of residual value. What will be the value of the machine after 5 years?
  13. Morse alphabet
    morse_code Calculate how many words of Morse code to create compiling commas and dots in the words of one to five characters.
  14. No. of divisors
    triangle_div How many different divisors has number ??
  15. Lottery
    loteria_1 The lottery is 41000 elk in which 7300 wins. What is the probability that the purchase of 17 elks won nothing?
  16. Volume from surface area
    cube_3 What is the volume of the cube whose surface area is 96 cm2?
  17. Is equal
    Shazam Is equal following terms? ?
  18. Motion problem
    dragway From Bratislavy to Martina go car at speed 83 km/h. From Martina to Bratislavy go another car at speed 62 km/h. How many minutes before the meeting will be cars 21 km away?
  19. Equation
    cubic How many real roots has equation ? ?
  20. Wire
    cu_wire One pull of wire is reduced its diameter by 9%. What will be diameter of wire with diameter 9 mm over 8 pulls?

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