If you toss a coin 5 times how many times will fall tails?
If you roll the dice 7 times how many times will drop 2?
And if you throw a coin and dice to 1 million times?
Spend 10 million tests a few seconds on your phone/tablet!

The calculator allows you to calculate:
- Probability of the event (number of favorable outcomes of all possible outcomes);
- Conditional probability of an event;
- The relative frequency of the event (number of occurrence of the event the total number of trials);
- Combinatorics: permutations (10 000 members);
- Combinatorics: permutations with repetitions (up to 100 elements);
- Combinatorics: Accommodation (up to 5000 elements in the placement of 100 000 000);
- Combinatorics: accommodation with repetitions (up to 5000 elements in the placement of 1 000 000);
- Combinatorial: combination (to 10 000 elements in the combination of 10 000);
- Combinatorial: coupling repeatedly (10 000 elements in a combination of 10 000);
- Addition of probabilities of incompatible events;
- Multiplication of probabilities;
- Calculation of Bernoulli formula;

Tests:
- Coin toss;
- Throwing dice;

Also contained in the calculator formula and the definition of the theory of probability.