56+3=59

đợi 10 năm nữa

Từ 1-> 9 có 9 chữ số

Từ 10 ->99 có là:

                  (99 -10 +1) x 2 = 180 (chữ số)

   Từ 1-> 99 có là: 180 + 9 = 189 (chữ số)

    Số chữ số còn phải dùng là:

                   492 - 189 = 303 (chữ số)

  Từ 100 đến trang cuối có số trang là:

                   303 : 3 = 101 (trang)

   Vậy số trang của quyển sách là:

                  99 + 101= 200 (trang)

I. Read Mary Ann’s story, and answer the questions.
In 1969, Hurricane Camille hit my three-storey blocks of flats near the Gulf of Mexico. First, the sea hit the building and all the windows broke. Then the room flooded. Five minutes later, my bed was floating near the ceiling. Then it floated out of the window. It was dark and the wind was howling. I was terrified. The building was falling down all around me. The wind was awful. It reached a speed of 234 miles per hour. I was cut and bleeding from head to toe. Finally, someone found me 8 km from my house and they took me to hospital.
1. When did Hurricane Camille hit the Gulf of Mexico?
________________________________________________________________
2. What happened after the rooms flooded?
________________________________________________________________
3. What happened to the building?
________________________________________________________________
4. How fast was the wind?
________________________________________________________________
5. How far did the water carry Mary Ann?
________________________________________________________________

sai rùi số thứ 2 phải là 63

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