В классе 6 учащихся,среди них два друга-Михаил и Вадим.Класс случайным образом разбивают на 3 равные группы.Найти вероятность,что М и В окажутся в одной группе.

Ex.2. Put the
verb in brackets in the Present Perfect or Past Simple tense

1.    
Have you heard
the rules? They _______________(just/elect) a new manager.

2.    
Martha
_______________(find) a new job. She is starting next week.

3.    
When
______________Simon _______________(arrive) at the cinema yesterday?

4.    
John is a
well-known artist. He ______________(paint) a lot of pictures.

5.    
John
________________(paint) his first picture in 1980.

6.    
Mike
_______________(win) more than 20 medals when he was a sportsman.

7.    
I
________________(see) Sting last year.

8.    
I
______________(speak) to Celine Dion.

9.    
I
_______________(write) 5 letters this week.

10.  I ______________(read) this book a month ago.

11.  He _______________(still/not/buy) a computer.

12.  They ________________(yet/not/find) the way out.

13.  _______________you ______________(write) this
translation yet?