Integers - examples

  1. Divisibility
    divisibility Is the number 109433 divisible by 7?
  2. Trio
    3Soldiers 84 children lined up in groups of three. How many children did not create a trio?
  3. Cats
    cats Two cats caught two mice in two days. How many mouses will catch 6 cats for 6 days?
  4. Diofant 2
    1diofantos Is equation ? solvable on the set of integers Z?
  5. 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?
  6. 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?
  7. Sequence
    arithmetic_seq In the arithmetic sequence is a1=-9, d=4. Which member is equal to the number 147?
  8. Thermometer
    snehuliak The thermometer showed 10°C at morning. Then temperature was increased by 1°C again increased by 2°C and then decreased by 1°C and then decreased by 2°C. Which terminal temperature thermometer shows?
  9. Opposite numbers
    plus_minus Calculate opposite numbers (additive inverse) to given ones:
  10. Integers
    calculator_mechanical May be the sum of two integers less than their difference?
  11. Rounding 2
    nice_circles Round the following negative number: -151.918
  12. Father and son
    father_son Father and son are together 62 years. Son is 26 years younger than father. How old is the son?
  13. Gauss
    kfgauss Help little C.F. Gauss sum all the integers from 1 to 340.
  14. Yogurt
    jogurt The board is 20 yogurts. How many boards of yogurts must be ordered for 794 people in the canteen?
  15. Number
    fractions_1 Calculate the integer number which, divided by 45 gives 20 and the rest 2.
  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. Dice
    dices How many times must throw the dice, the probability of throwing at least one three was greater than 90%?
  18. 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?
  19. 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?
  20. 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?

Do you have interesting mathematical example that you can't solve it? Enter it and we can try to solve it.



To this e-mail address we will reply solution; solved examples are also published here. Please enter e-mail correctly and check whether you don't have a full mailbox.