Question

срез по математике помогите.на экзамене 25 билетов,сергей не выучил 3 из них .найдите вероятность того,что ему попадется выученный билет.

Answer 1

По теории вероятности:
1) 25-3=22 (бил.)-выучено
2) 22/25=0,88
Ответ: 0,88

Answer 2

Probability of Getting a Memorized Ticket

To find the probability that Sergey will get a memorized ticket out of the 25 tickets on the exam, we need to know how many tickets he has memorized. According to the given information, Sergey has not memorized 3 out of the 25 tickets.

To calculate the probability, we need to divide the number of favorable outcomes (memorized tickets) by the total number of possible outcomes (all tickets).

The number of favorable outcomes is the number of tickets Sergey has memorized, which is 25 - 3 = 22.

The total number of possible outcomes is the total number of tickets on the exam, which is 25.

Therefore, the probability that Sergey will get a memorized ticket is 22/25.

Please note that this calculation assumes that all tickets are equally likely to be chosen and that Sergey has an equal chance of getting any ticket.

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