Quiz about ปลาย4 เทอม2

Question 1

$$C_{15,3}\ มีค่าตรงกับข้อใด$$

Accepted Answer

455

Answer

480

Answer

555

Answer

565

Question 2

$$C_{40,2}\ มีค่าตรงกับข้อใด$$

Accepted Answer

780

Answer

1200

Answer

1560

Answer

2310

Question 3

$$C_{25,3\ }มีค่าตรงกับข้อใด$$

Accepted Answer

2300

Answer

2530

Answer

2323

Answer

2400

Question 4

$$C_{52,2}\ มีค่าตรงกับข้อใด$$

Accepted Answer

1326

Answer

1426

Answer

1566

Answer

1568

Question 5

$$\frac{11!5!}{9!3!}\ มีค่าตรงกับข้อใด$$

Accepted Answer

2200

Answer

1200

Answer

1220

Answer

2230

Question 6

$$\frac{\left[n-1\right]!}{\left[n+1\right]!}\ มีค่าตรงกับข้อใด$$

Accepted Answer

$$\left[n-1\right]n$$

Answer

$$\left[n-1\right]\left[n-2\right]$$

Answer

$$n\left[n+1\right]$$

Answer

$$\left[n-1\right]n\left[n+1\right]$$

Question 7

$$C_{n,2\ }=253\ \ มีค่าตรงกับข้อใด$$

Accepted Answer

23

Answer

33

Answer

22

Answer

32

Question 8

$$C_{n,3}=120$$

Accepted Answer

10

Answer

11

Answer

9

Answer

8

Question 9

$$C_{n,1=1\ มีค่าตรงกับข้อใด}$$

Accepted Answer

1

Answer

0

Answer

-1

Answer

2

Question 10

$$C_{n,4=126}$$

Accepted Answer

9

Answer

10

Answer

8

Answer

7

Question 11

$$C_{n,2=1953\ มีค่าตรงกับข้อใด}$$

Accepted Answer

63

Answer

62

Answer

73

Answer

72

Question 12

$$\frac{10!}{8!5!}มีค่าตรงกับข้อใด$$

Accepted Answer

$$\frac{3}{4}$$

Answer

$$\frac{1}{4}$$

Answer

$$\frac{3}{5}$$

Answer

$$\frac{2}{3}$$

Question 13

$$\frac{12!5!}{10!7!}\ มีค่าตรงกับข้อใด$$

Accepted Answer

$$\frac{22}{7}$$

Answer

$$\frac{11}{42}$$

Answer

$$\frac{132}{7}$$

Answer

$$\frac{12}{31}$$

Question 14

$$C_{n,18}=_{ }C_{n,15\ }มีค่าตรงกับข้อใด$$

Accepted Answer

33

Answer

18

Answer

3

Answer

17

Question 15

$$C_{n,27}=C_{n,24}มีค่าตรงกับข้อใด$$

Accepted Answer

51

Answer

27

Answer

24

Answer

31

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