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Question 1 (TIMO-V2-2019). Alice wrote a 2-digit number on a piece of paper and asked Bobby to guess it. Bobby asked: “Is the number 68?”�Alice replied: “One of the digits is correct, the position of that digit is wrong.”Bobby asked again: “Is the number 7?”�Alice replied: “One of the digits is correct, the position of that digit is wrong.”Bobby asked again: “Is the number 79?”�Alice said: “One of the digits is correct, the position of that digit is correct.” What is the number written by Alice?�2-digit number: Số có 2 chữ số; Digit: Chữ số; Number: Số; The position of that digit: Vị trí của chữ số đó; Correct: Đúng; Wrong: Sai.

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Question 2 (TIMO-V2-2019).When Bruce was born, mum was 29 years old. When Bruce will be 28 years old, how old will mum be? �Born: Sinh ra; Years old: Tuổi.

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Question 3 (TIMO-V2-2019). According to the pattern shown below, what is the number in the blank? �Pattern: Quy luật; Number: Số; Blank: Chỗ trống. �12 、 15 、 21 、 30 、 42 、 57 、 __

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Question 4 (TIMO-V2-2019).According to the pattern below, what is the English letter in the space? �Pattern: Quy luật; English letter: Chữ cái Tiếng Anh; Space: Chỗ trống. �P 、 M 、 J 、 G 、 __

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Question 5 (TIMO-V2-2019). According to the pattern below, how many ※ is / are there in the 7th Group? Pattern: Quy luật; 7th Group: Nhóm thứ 7.

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Question 6 (TIMO-V2-2019). �Find the value of 37 + 13 - 68 – 13 + 51.�Value: Giá trị.

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Question 7 (TIMO-V2-2019). �Find the value of 24 + 62 +16 + 29 + 8.�Value: Giá trị.�

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Question 8 (TIMO-V2-2019). �Find the value of 1 x 113 + 2 x 113 + 3 x 113 + 4x 113 .�Value : Giá trị

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Question 9 (TIMO-V2-2019). If A and B are both 1-digit number, find the value of B . �1-digit number: Số có 1 chữ số; Value: Giá trị.� A A� + A B� __________� 7 2

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Question 10 (TIMO-V2-2019). What is the number in the blank if the equation below is correct?�Number: Số; Blank: Chỗ trống; Equation: Phép tính; Correct: Đúng.� ___ : 2 + 9 = 19

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Question 11 (TIMO-V2-2019).How many 2-digit even number(s) that is / are multiples of 3 is / are there?�2-digit even number: Số chẵn có 2 chữ số; �Multiple of 3: Bội của 3.

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Question 12 (TIMO-V2-2019). Fill the lines with “+” and “–” to make the equation below correct. (Write down the complete equation on the answer sheet). �Line: Dòng kẻ; Equation: Phép tính; Correct: Đúng; Write down the complete equation on the answer sheet: Viết phép tính hoàn chỉnh vào phiếu trả lời. � 15___8___6___1 = 16

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Question 13 (TIMO-V2-2019).Fill the lines with “x” and “+” to make the equation below correct. (Write down the complete equation on the answer sheet).�Line: Dòng kẻ; Equation: Phép tính; Correct: Đúng; Write down the complete equation on the answer sheet: Viết phép tính hoàn chỉnh vào phiếu trả lời.� 6___ 4___3___ 2 = 29

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Question 14 (TIMO-V2-2019). If A is odd number, the result of A x (A + 1) x (A + 2) is odd or even?� �Odd: Lẻ; Determine: Xác định; Result: Kết quả; Even: Chẵn.

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Question 15 (TIMO-V2-2019). If A and B are both 1-digit numbers and C # 0 , find the value of A + B .�1-digit number: Số có 1 chữ số; Value: Giá trị.�

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Question 16 (TIMO-V2-2019).According to the pattern below, what is the figure in the space (“_” )?�Pattern: Quy luật; Figure: Hình vẽ; Space: Chỗ trống.� ● ▲ ●  ● ▲ ●  ● ▲ ●___● ▲ ●  ...��

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Question 17 (TIMO-V2-2019). How many square(s) is / are there in the figure below?�Square: Hình vuông; Figure: Hình vẽ.

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Question 18 (TIMO-V2-2019). The lengths of two sides for a triangle are 6cm and 10cm respectively and all length are integers. Find the maximum length of the other length. �Length: Độ dài; Side: Cạnh; Triangle: Hình tam giác; Integer: Số nguyên; Maximum length: Độ dài lớn nhất.

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Question 19 (TIMO-V2-2019). At least how many squares can be seen if viewing the figure below from side? �At least: Ít nhất; Square: Hình vuông; Figure: Hình vẽ; From side: Từ bên cạnh

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Question 20 (TIMO-V2-2019). At most how many pieces can be formed by using 4 lines to cut a circle? �At most: Nhiều nhất; Pieces: Mảnh; Formed by: Tạo ra bởi; Line: Đường thẳng; Circle: Đường tròn. �

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Question 21 (TIMO-V2-2019). Choose 2 digits, without repetition, from 0, 3, 5, 7, 8 to form 2-digit numbers. Of these 2digit numbers, how many of them are odd number? �Digit: Chữ số; Without repetition: Không lặp lại; 2-digit number: Số có 2 chữ số; Odd number: Số lẻ.

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Question 22 (TIMO-V2-2019).What is the greatest 4-digit even number by using 0, 3, 5, 7 and 8? (Each digit can only be used once). �Greatest 4-digit even number: Số chẵn có 4 chữ số lớn nhất; Each digit can only be used once: Mỗi chữ số chỉ được dùng 1 lần.

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Question 23 (TIMO-V2-2019). Pick 3 from 9 competitors to get gold, silver, bronze reward. How many different combination(s) is/are there? �Competitor: Vận động viên, Reward: Giải thưởng; Different combinations: Sự lựa chọn khác nhau.

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Question 24 (TIMO-V2-2019). Chris has ten $1 coins, nine $2 coins and three $5 coins, at most how many book(s) can he buy given that each book costs $4? �Coin: Đồng xu; At most: Nhiều nhất.

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Question 25 (TIMO-V2-2019).Which number below is the greatest?�Number: Số; Greatest: Lớn nhất. � 20196951 、 20186421、 2020345 、 20198462 �