Often, when solving problems, you need to find out if a given number is divisible by a given digit without a remainder. But dividing it every time is a long time, besides, there is a high probability of making a mistake in the calculations and getting away from the correct answer. What if you need to divide by another, larger number, for example, how to calculate the sign of divisibility by 15? We will try to find the answer to this question in this article
Do you know what a literary text is and what is its main difference from the texts of other functional styles?














