6/12

Đức Hiền has 7 $1 coins, 3 $2 coins and 4 $5 coins.
At most how many souvenirs can he buy for a souvenir at the cost of $5?

• 4

• 5

• 6

• 7

Jack has 5 $1 coins, 3 $2 coins and 3 $5 coins.
How many different costs of a product can he buy without any changes?

• 35

• 36

• 42

• 26

An Nhiên is enjoying her one week school holiday (Monday to Saturday).
She would like to go for 2 pickleball classes this week, but her mother does
not allow her to go for 2 consecutive days.
How many arrangements can be made in order for her to go for 2 swimming
classes?

• 10

• 15

• 20

• 30

During a show, Minh Quân distributed 100 cards which were numbered with 1, 2, 3,
..., 100 to the children.
In the final lucky draw, children with the number containing digit 3 won the
prizes.
How many kids won?

• 18

• 19

• 21

• 20

How many 4-digit numbers can be formed using the digits 0, 1, 2 and 3
without repeating any of the digits?

• 15

• 16

• 17

• 18

The digits 2, 5 and 8 can be used to form 6 different 2-digit numbers
What is the sum of the smallest and largest numbers that can be formed?

• 110

• 108

• 56

• 75