Bài 5. Gieo một xúc xắc hai lần liên tiếp. Phát biểu mỗi biến cố sau dưới dạng mệnh đề nêu sự kiện:

a) C = {(1;1)}  

b) D = {(1;6);(6;1)} 

c) G = {(3;3);(3;6) ; (6;3);(6;6)};

d) E = {(1;1);(1;3);(1;5);(3;3);(3;1);(3;5);(5;5);(5;1);(5;3)}  

Một lớp có 40 học sinh, được đánh số từ 1 - 40 . Chọn ngẫu nhiên ra một bạn học sinh. Tính  xác suất để bạn được chọn: 

a) Mang số chẵn      b) Mang số chia hết cho 3 

1.     I eat a few/ a little/ a lot of cheese – too much, really, but I love it.

2.     I made  a few/ a little/ a lot of sandwiches, but our visitors still ate every single one!

3.     When I was younger, I ate a lot of chocolate, but I eat fewer/less/ more chocolate now – I'm trying to be healthier.

4.     We prepared enough food for ten people, but there were a lot fewer/less/ more people than that at the party. It was really crowded!

5.     The extra-large pizza is perfect for four or more people. For fewer/less/ more people, we recommend a normal pizza.

6.     It’s better to cook your own food than to buy fast food. Cooking usually takes fewer/less/ more time, but it’s much healthier.

7.     A: So who did you invite for dinner?
B: Just  a few/ a little/ a lot of people – only three.

8.     A: Do you want some milk or sugar in your coffee?
B: Just a few/ a little/ a lot of milk, please. Not too much.

9.     A: How much time do you spend cooking every day?
B: a few/ a little/ a lot of ! At least three hours every day.

For breakfast, I usually have a/any/some toast and jam. I don’t put a/any/some butter on my toast. I usually just drink  a/any/some  cup of tea with my breakfast. I don’t put a/any/some   sugar in my tea – I don’t like sweet drinks. At the weekend, I often have  a/any/some    egg for breakfast. Then, at about 11 o’clock, I usually have a/any/some coffee break. I eat a/any/some biscuits – just two or three. Then for lunch, I usually have a/any/some sandwich. I also eat  a/any/some fruit, like an apple or an orange. I never eat a/any/some crisps – they’re really unhealthy.

1.     How many/much  meals do you eat every day?

2.      We haven’t got many/much   bread. Can you buy some?

3.     There wasn’t many/much   food at the party, so I’m still hungry!

4.     You eat too many/much sweets. They’re bad for your teeth.

5.     Do you eat many/much fruit?

6.     How  many/much  rice do you want? A lot or just a little?

7.     You didn’t cook many/much   peas. Are you sure there are enough for all of us?

8.     I don’t want too many/much   spaghetti. I’m not really hungry.

9.     There’s too many/much  butter on that toast! It’s not healthy.

10.  I don’t eat many/much   eggs. I don’t really like them.

Trong mặt phẳng với hệ tọa độ Oxy, cho đường thẳng d: x-y-6 = 0 và hai điểm A (6;4), B (4;0). Viết phương trình đường tròn (C) có tâm thuộc d và đi qua hai điểm A,B

mọi ng giúp e bài này với ạ