в коробке лежат 7 синих карандашей и 3 красных.Какова вероятность того,что из четырех наугад выбранных карандашей 2 будут синими и 2 красными?

Мэри Поппинс приклеивает к небу звездочки. Когда она приклеила половину всех звездочек,а потом еще половину оставшихся,то ей осталось приклеить 8 звездочек. Сколько всего звездочек было у Мэри Поппинс?

ПОМОГИТЕ С ТЕСТОМ ПЖЛ

1.                They arrived ___ Spain about two hours ago

At

In

To

From

2.                I really hate walking___

On feet

On foot

By foot

At foot

By feet

3.                His wife was not feeling too well and she wanted to ago ____ home

To

For

__

Into in

4.                She entered _____ the room quickly and stood near the door

In

To

____

Into

In

5.                She was born ___1985

In

During

At

White

1.    Two weeks ….. since I started my letter to you

Had gone

Have gone

Went

Gone

Was gone

2.    Anna is here. She___

Has just come

Just came

Is just coming

Is coming

Is coming

3.    `Where is your sister?` - `She a bath`

Have been having

Has had

Has been having

Is having

4.    He___ in the centre of the city

Live

Lives

Is living

Are living

Have

5.    We_____ five days a week

Works

Work

Are working

Working

Have

6.    This pupil ___ a book

Am reading

Are reading

Is reading

Reading

Have read

Расстояние между Гомелем и Могилёвом,раное170км, автомобиль проехал со скоростью 60 км\ч. Определите время движения автомобиля?