1. He often goes to school by bus

2. Now they are watching TV in their living room

3. John can speak Vietnamese

4. We are staying with our grandparents in Da Nang next summer vacation

5. How often does she read books ?

1. There are two dogs in my house

2. There is a good film at the Rex

3. There aren't mistakes in your exercise

4. There is a post office in the village

5. How many chair are there in your room?

6. There aren't any books in this store

Câu 31: Which can move faster, heat or cold?

Câu 32: What weather do mice and rats fear?

Câu 33: Who always drives his customers away?

Câu 34: Who will be your real friend, a poor friend or a rich one?

Câu 35: Why did the banker keep looking up at the sky?

Câu 36: What is the longest word in the English language?

Câu 37: Why is the letter E so important? ( Xem đáp án )

Câu 38: Why is the letter R absolutely necessary to friendship?

Câu 39: What can you tell from Peter's record card with extremely poor grades?

Câu 40: What has four fingers and a thumb but no flesh and bone?

Câu 41: Who goes around all day in a car with his bag full of money?

Câu 42: Mouse fell of a 1000-step stair and was not hurt. Why?

Câu 43: Who works only one day in a year but never gets fired?

Câu 44: What do your drop when you need it and take back when you don't?

Câu 45: What is higher without a head than with a head?

Câu 46: When can you have something and nothing at the same time in your pocket

Câu 47: Where can you always find money?

Câu 48: "Railroad crossing, look out for the cars." Can you spell it without any R's?

Câu 49: Why do fish live in water?

Câu 50: What kind of party do prisoners like?

Câu 51: Which has more legs, a cow or no cow?

Câu 52 What is black when it is clean and white when it is dirty?

Câu 53: Why are grandpa's false teeth like stars

Câu 54: What word is pronounced wrong, even by the best of scholars?

Câu 55: What will make more noise in your house than a dog?

Câu 56: What are two things people never eat before breakfast?

Câu 57: Why did the man throw a bucket of water out the window?

Câu 58: Why did the man throw the butter out the window?

Câu 59: Why did the man put the clock in the safe?

Câu 60: What has a neck, but no head?

Câu 61: I am a band but I don't play any music - what am I?

Câu 62: If yesterday had been Wednesday's tomorrow and tomorrow is Sunday's yesterday, what day would be?

Câu 63: Where is the ocean the deepest?

Câu 64: How many legs does an ant have?

Câu 65: Which letter is always trying to find reasons?

Câu 66: Which letter is not me?

Câu 67: Why is the letter A like a flower?

Câu 68: Why is the letter "A" like noon?

Câu 69: What letter of the alphabet has got lots of water?

Câu 70: What begins with T, ends with T and has T in it?

Câu 71: What are the 3 important rings in life?

Câu 72: A man rode into town on Tuesday. Two days later he rode home on Tuesday. How is this possible

Câu 73: Why did the student take a ladder to school?

Câu 74: Why did the tomato blush?

Câu 75: What are the two strongest days of the week?

Câu 76: What do you call a bear without an "ear"?

Câu 77: What is the difference between the capital of Russia and a calf's mother?

Câu 78: What's the difference between a TEACHER and a CONDUCTOR?

Câu 79: What do you call a fish that only cares about himself?

Câu 80: What's a minimum?

Câu 81: Why can't a bicycle stand on its own?

Câu 82: What's got a wave but no sea?

Câu 83: Where does a boxer who weighs 135 kilograms sit on a bus?

Câu 84: What is the word that everybody always says wrong?

Câu 85: What five-letter word becomes shorter when you add two letters to it?

Câu 86: What's the longest word in the dictionary?

Câu 87: How many seconds are there in one year?

Câu 88: What did the doctor say when the invisible man called to make an appointment?

Câu 89: What has teeth but can't bite?

Câu 90: What a bee says when it gets in the hive?

Câu 91: What flowers have two lips?

Câu 92: They travel all over the world but end up in the corner, what are they?

Câu 93: What is the difference between a jeweler and a jailor?

Câu 94: What's a teacher's favorite nation?

Câu 95: What's the most colorful state of U.S.A.?

Câu 96: How many letters are there in the alphabet?

Câu 97: Which months have 28 days?

Câu 98: What do you call your father-in-law's only child's mother-in-law?

Câu 99: What 11-letter English word does everyone pronounce incorrectly?

Câu 100: If you drop a yellow hat into the red sea, what does it become?

"HẾT"

Quy tắc: - Có thể tham khảo trên mạng (không chép theo)

- Không gian lận (nhu quy tắc của những câu đố trước)

(A) 10cm

(B) 20

1: Tìm GTNN

A = |x - 2| + |x + y - 5| + 3

2: Tìm GTLN

\(\dfrac{10}{2+\left|x+3\right|+\left|y+7\right|}\)