Quiz: Math Quiz


Math QuizOnline version Choose correct answer by Nonpawit Natekunawutipong 1 a 25 b 16 c 9 d 4 e 1/6 2 a {π/8, 3π/8, 5π/8, 10π/8, 12π/8, 14π/8} b {π/6, 2π/6, 4π/6, 7π/6, 8π/6, 9π/6} c {π/4, 2π/4, 3π/4, 5π/4, 6π/4, 7π/4} d {π/6, π/4, 3π/6, 3π/4, 8π/6, 7π/4} e {π/3, π/4, 2π/3, 3π/4, 5π/3, 7π/4} 3 a 0 b -1/2 c -1/4 d 1/2 e -1/4 4 In a box, there are 9 cards labeled with the numbers 1, 2, 3, …, 9. If 3 cards are drawn simultaneously from the box, what is the probability that the product of the three numbers is an even number? a 1/2 b 2/3 c 16/21 d 33/42 e 37/42 5 a (x+4)^2=−12(y−1) b (x+4)^2=−20(y−1) c (y−1)^2=−12(x+4) d (y−1)^2=−16(x+4) e (y−1)^2=−20(x+4) 6 In a lottery game at Mahidol university, there is a box containing 9 balls labeled with the numbers 1, 2, 3, …, 9, with no repeated numbers. In each round of the game, the player must pay 90 baht to draw two balls at the same time. If the product of the numbers on the two balls drawn is an even number, the player wins a prize of 180 baht. If the product is an odd number, the player receives no prize. Based on this information, which of the following statements is correct? a On average, the player breaks even. b On average, the player makes a profit of 40 baht per round. c On average, the player makes a profit of 90 baht per round. d On average, the player loses 40 baht per round. e On average, the player loses 90 baht per round. 7 A bakery sells cookies boxes. It is found that the profit per box is a quadratic function of the number of boxes sold per day such as On days when 20 boxes are sold, the shop makes a profit of 20 baht per box. On days when 10 boxes are sold, the shop breaks even (the revenue from selling equals the cost). On days when no cookies are sold, the shop loses 40 baht per box. Determine the number of cookies boxes should aim to sell each day in order to achieve the maximum profit per box. a 15 b 20 c 25 d 30 e 35

1

a

25

b

16

c

9

d

4

e

1/6

2

a

{π/8, 3π/8, 5π/8, 10π/8, 12π/8, 14π/8}

b

{π/6, 2π/6, 4π/6, 7π/6, 8π/6, 9π/6}

c

{π/4, 2π/4, 3π/4, 5π/4, 6π/4, 7π/4}

d

{π/6, π/4, 3π/6, 3π/4, 8π/6, 7π/4}

e

{π/3, π/4, 2π/3, 3π/4, 5π/3, 7π/4}

3

a

0

b

-1/2

c

-1/4

d

1/2

e

-1/4

4

In a box, there are 9 cards labeled with the numbers 1, 2, 3, …, 9. If 3 cards are drawn simultaneously from the box, what is the probability that the product of the three numbers is an even number?

a

1/2

b

2/3

c

16/21

d

33/42

e

37/42

5

a

(x+4)^2=−12(y−1)

b

(x+4)^2=−20(y−1)

c

(y−1)^2=−12(x+4)

d

(y−1)^2=−16(x+4)

e

(y−1)^2=−20(x+4)

6

In a lottery game at Mahidol university, there is a box containing 9 balls labeled with the numbers 1, 2, 3, …, 9, with no repeated numbers. In each round of the game, the player must pay 90 baht to draw two balls at the same time. If the product of the numbers on the two balls drawn is an even number, the player wins a prize of 180 baht. If the product is an odd number, the player receives no prize. Based on this information, which of the following statements is correct?

a

On average, the player breaks even.

b

On average, the player makes a profit of 40 baht per round.

c

On average, the player makes a profit of 90 baht per round.

d

On average, the player loses 40 baht per round.

e

On average, the player loses 90 baht per round.

7

A bakery sells cookies boxes. It is found that the profit per box is a quadratic function of the number of boxes sold per day such as On days when 20 boxes are sold, the shop makes a profit of 20 baht per box. On days when 10 boxes are sold, the shop breaks even (the revenue from selling equals the cost). On days when no cookies are sold, the shop loses 40 baht per box. Determine the number of cookies boxes should aim to sell each day in order to achieve the maximum profit per box.

a

15

b

20

c

25

d

30

e

35

You can integrate the game into an LMS compatible with LTI 1.1 or LTI 1.3 such as Canvas, Moodle, or Blackboard. This way, the scores will be automatically saved into the platform’s gradebook.

Math Quiz

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Math QuizOnline version

by Nonpawit Natekunawutipong

In a box, there are 9 cards labeled with the numbers 1, 2, 3, …, 9. If 3 cards are drawn simultaneously from the box, what is the probability that the product of the three numbers is an even number?

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