D) Answer the questions.

1) How many people are there in the garden? ( a dozen of people )

______________________________________________________________________________

2) How much money do you need to buy that cat? (not – so much)

______________________________________________________________________________

3) Are there many building in your neighborhood? ( - )

______________________________________________________________________________

4) How many tables are there in your restaurant? ( twenty )

______________________________________________________________________________

5) Do you need much time to plan your birthday party? ( + )

______________________________________________________________________________

6) Are there many cups on the shelves? (-)

______________________________________________________________________________

7) Is there much rice in the bottle? ( + )

______________________________________________________________________________

8) How many books have you read so far? ( eleven )

______________________________________________________________________________

C) Fill in the blanks with “much – many – how much – how many”.

1) I made so __________ mistakes that I failed the test.

2) “__________ money did you save last year?”

“I didn’t save so __________ money last year”

3) There are __________ papers to type but I don’t have __________ time to type them.

4) “I want to make a cake but I don’t have __________ sugar.” “__________ sugar do you have?”

5) I don’t have __________ butter to make an omelet. But I have make eggs.

6) __________ cars are there at the garage?

7) Sam didn’t spend __________ time to build that house.

8) __________ time do you need to get ready?

9) My English teacher doesn’t give __________ homework.

10) Lawrence didn’t find __________ evidence to find the robbers.

11) __________ trees are there to be cut down?

B) “How much” or “How many”

A) Underline the correct one.

1) My mother made so much – many cake that we couldn’t finish it.

2) Sarah has much – many books in her bookcase.

3) How much – how many people are there in the library? I don’t know exactly but there are so much – many people that there is nowhere to sit.

4) How much – how many money do we need to buy that house?

5) There aren’t much – many eggs in the fridge to make a cake.

6) There isn’t much – many time to finish the project.

7) How much – how many water do you need to water the flowers?

8) Are there much – many papers to type?

9) April didn’t buy much – many clothes yesterday.

Giả sử ta có các số thực dương  \(x_1,x_2,...,x_k\) thỏa mãn điều kiện: 

                        \(x_1^2+x_2^2+...+x_k^2<\frac{x_1+x_2+...+x_k}{2}\)

                        \(x_1+x_2+...+x_k<\frac{x_1^3+x_2^3+...+x_k^3}{2}\)

Tìm giá trị nhỏ nhất của k và với giá trị k đó, hãy chỉ ra một bộ số \((x_1,x_2,...,x_k)\)  thỏa mãn điều kiện trên.

    Một cả hàng văn phòng phẩm có 6 chồng vở. Số quyển vở của mỗi chồng lần lượt là: 35,40,36,27,18,25 quyển. Buổi sáng cửa hàng đã bán trọn một chồng vở. Buổi chiều họ bán số vở băng 1/5 tổng số vở. Hỏi buổi sáng họ bán dược chồng vở nào?    Số quyển vở của mỗi chồng lần lượt là: 35,40,36,27,18,25 quyển. Buổi sáng cửa hàng đã bán trọn một chồng vở. Buổi chiều họ bán số vở băng 1/5 tổng số vở. Hỏi buổi sáng họ bán dược chồng vở nào?