Integers - examples

  1. Divisibility
    divisibility Is the number 109433 divisible by 7?
  2. Monkey
    monkey Monkey fell in 31 m deep well. Every day her scramble 3 meters, at night dropped back by 2 m. On that day it gets hangover from the well?
  3. Chickens and rabbits
    pipky In the yard were chickens and rabbits. They had 44 heads and 124 legs. How many chickens and how many rabbits was in the yard?
  4. Cats
    cats Two cats caught two mice in two days. How many mouses will catch 6 cats for 6 days?
  5. When will I be a millionaire?
    milionar_kedy Chris monthly send 150 euros to the bank, which he deposits bear interest of 2.1% p.a. Calculate how many months must Chris save to save 1000000 euros? Inflation, interest rate changes or bank failures ignore.
  6. Trio
    3Soldiers 84 children lined up in groups of three. How many children did not create a trio?
  7. Diofant 2
    1diofantos Is equation ? solvable on the set of integers Z?
  8. Diofant equation
    diofantos In the set of integers (Z) solve the equation: ? Write result with integer parameter ? (parameter t = ...-2,-1,0,1,2,3... if equation has infinitely many solutions)
  9. Report card
    vysvedcenie_1 Ivor hit 1× grade 5 at the beginning of the school year. How many times must now catch grade 1 to get grade 2 on report card?
  10. Sequence
    arithmetic_seq In the arithmetic sequence is a1=-9, d=4. Which member is equal to the number 147?
  11. Dice
    dices How many times must throw the dice, the probability of throwing at least one three was greater than 90%?
  12. Sugar - cuboid
    kocky_cukor Pejko received from his master cuboid composed of identical sugar cubes with count between 1000 and 2000. The Pejko eat sugar cubes in layers. The first day eat one layer from the front, second day one layer from right, the third day one layer above. Yet i
  13. Mistake
    minus Nicol mistake when calculate in school. Instead of add number 34 subtract it. What is the difference between the result and the right result?
  14. Father and son
    father_son Father and son are together 62 years. Son is 26 years younger than father. How old is the son?
  15. Unknown x
    UnknownX If we add to unknown number 72, then divide by 2 and then subtract 29, we get back an unknown number. What is this unknown number?
  16. Class
    pytagoras_class When Pythagoras asked how many students attend the school, said: "Half of the students studying mathematics, 1/4 music, seventh silent and there are three girls at school." How many students had Pythagoras at school?
  17. Shooter
    terc_1 The shooter fired to a target from distance 9 m The individual concentric circle of targets have a radius increments 1 cm (25 points) by 1 point. Shot was shifted by 16'(angle degree minutes). How many points should win his shot?
  18. Opposite numbers
    plus_minus Calculate opposite numbers (additive inverse) to given ones:
  19. Monty Hall
    Monty_open_door Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. W
  20. Ladislav in Amsterdam
    jakob3 Ladislav was reward and went to conference in Amsterdam. Conferense fee was € 2184. Calculate how many books Ladislav could buy at the price of 42 and 28 euros if he don't want fill whole home library and he can buy only 63 books?

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