Lotofácil (15 de 25)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
C(25,15) = 3.268.760
About this calculator
This Lotofácil calculator determines the total number of possible combinations when betting on 15 numbers out of 25 available. The calculation uses the simple combination formula C(25,15), resulting in 3,268,760 combinations. This means that to guarantee hitting all 15 drawn numbers, one would need to play all these tickets, which is financially impractical.
The tool is useful for understanding the real odds of winning in Lotofácil. Knowing that there are over 3 million combinations, the player can better assess the probability of winning, which is approximately 1 in 3.27 million for the top prize. This helps in making informed decisions about how much to invest in tickets.
It is recommended to use this calculator for educational or financial planning purposes. It does not replace luck but provides a solid mathematical foundation. Remember that Lotofácil also offers prizes for matching 11 to 14 numbers, with higher probabilities, but still low.
Be cautious when interpreting results: the number of combinations is fixed, regardless of strategies like choosing 'hot' or 'cold' numbers. Each draw is independent, and the probability of any specific combination is the same.
Frequently asked questions
What is the probability of hitting all 15 numbers in Lotofácil?
The probability is 1 in 3,268,760, approximately 0.00003%.
How many numbers should I mark on the Lotofácil ticket?
The minimum is 15 numbers. You can mark up to 20 numbers, but the cost increases with the number of combinations.
Is it true that choosing sequential numbers reduces the odds?
No. All combinations have the same probability. Choosing sequences does not change the odds.
How do I calculate the bet cost with more than 15 numbers?
The cost is proportional to the number of combinations. For example, 16 numbers generate C(16,15)=16 combinations, so the bet costs 16 times the price of a simple bet.
Does the calculator consider secondary prizes?
No. It only calculates the total combinations for 15 numbers. For matching 11 to 14 numbers, the probability is higher, but not calculated here.