Question

Экологи запускают в пруд Карпов. Сначала-одного, через час-ещё двух, через два часа-трёх и т.д. Браконьер Петя начинает лов рыбы спустя час после того, как в пруд был запущен первый карп. В первый час своей рыбалке Петя ловит 1 карпа, во второй час-двух,в третий час-трёх и т.д. Сколько карпов останется в пруду спустя сутки возле запуска в пруд первой рыбки?А)0. Б)1. В)25. Г)23. Помогите пожалуйста, буду очень благодарна,нужно на завтра.

Answer 1

Ответ к этой простой задаче - в

Answer 2

Problem Analysis

The problem states that ecologists are releasing carp into a pond. Initially, one carp is released, followed by two more after an hour, three more after two hours, and so on. After one hour from the first carp release, a poacher named Petya starts fishing. In the first hour, Petya catches one carp, in the second hour, he catches two carp, and so on. The question is how many carp will remain in the pond after one day (24 hours) from the release of the first carp.

Solution

To solve this problem, we need to calculate the total number of carp released into the pond and subtract the number of carp caught by Petya. Let's break down the problem step by step.

1. Calculate the number of carp released into the pond: - The first carp is released at the start. - After one hour, two more carp are released. - After two hours, three more carp are released. - After three hours, four more carp are released. - And so on.

To find the total number of carp released, we can use the formula for the sum of consecutive numbers: `n * (n + 1) / 2`, where `n` is the number of hours passed since the first carp release.

Let's calculate the number of