Given Amy has 3 sisters and 2 brothers, how many child(ren) does Amy's mother have?

Sister: Chị/em gái; Brother: Anh/em trai; Children: Người con; Amy’s other: Mẹ của Amy

According to the pattern shown below, what is the 27th symbol counting from the left?

Pattern: Quy luật; 27th symbol: Biểu tượng thứ 27; From the left: Từ bên trái

• Hình vuông

• Hình tròn

• Hình tam giác

After 6 years, Amy will be 13 years old. How old was Amy 4 years ago?

Year: Năm; Year old: Tuổi

John wrote a 2-digit number on a piece of paper and asked Peter to guess it.

Peter asked: “Is the number 89?”

John replied: “One of the digits is correct, the position of that digit is also correct.”

Peter asked again: “Is the number 17?”

John replied: “One of the digits is correct, the position of that digit is wrong.”

Peter asked again: “Is the number 75?”

John said: “One of the digits is correct, the position of that digit is correct.”

What is the number written by John?

2-digit number: Số có 2 chữ số; Number: Số; Digit: Chữ số; Correct: Đúng; Wrong: Sai; Position

of that digit: Vị trí của chữ số đó.

According to the pattern below, how many circle is / are there in the 10th Group?

Pattern: Quy luật, 10th Group: Nhóm thứ 10

Find the value of 1+ 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 .

Value: Giá trị

Find the value of 15 x 12 + 15 x 3 - 15 x 5 .

Value: Giá trị

Find the value of 2 - 4 + 6 - 8 + 10 - 12 + 14 -16 + 18 .

Value: Giá trị.

What is the number that should be filled in the blank?

Number: Số; Blank: Chỗ trống.

123 x            = 861

If A and B are both 1-digit numbers, what is the value of B?

1-digit number: Số có 1 chữ số; Value: Giá trị