Extra Revision

Question 1

What is a triangular number?

Answer 1

A number that can be arranged to make a triangle.

1+2+3=6

Question 2

What is the formula for a triangular number?

Answer 2

n ×(n+1)/2

Question 3

What is Eulers Law

Answer 3

(Faces + Vertices) – Edges = 2

Question 4

Prism

Faces

Answer 4

Number of sides + 2

(of the 2D shape)

Question 5

Prism

Edges

Answer 5

Number of sides x 3

(of the 2D shape)

Question 6

Prism

Vertices

Answer 6

Number of sides x 2

(of the 2D shape)

Question 7

What are the first 5 prime numbers

Answer 7

2,3,5,7,11

Question 8

What are the first 10 prime numbers

Answer 8

2,3,5,7,11,13

17,19,23,29

Question 9

What are the first 15 prime numbers

Answer 9

2, 3, 5, 7, 11, 13,

17, 19, 23, 29, 31

37, 41, 43, 47, 53

Question 10

11²

Answer 10

121

Question 11

12²

Answer 11

144

Question 12

13²

Answer 12

169

Question 13

14²

Answer 13

196

Question 14

15²

Answer 14

225

Question 15

16²

Answer 15

256

Question 16

17²

Answer 16

289

Question 17

18²

Answer 17

324

Question 18

19²

Answer 18

361

Question 19

20²

Answer 19

400

Question 20

5³

Answer 20

125

Question 21

6³

Answer 21

216

Question 22

7³

Answer 22

343

Question 23

8³

Answer 23

512

Question 24

9³

Answer 24

729

Question 25

10³

Answer 25

1000

Question 26

What is a composite number?

Answer 26

A number that has at least 3 factors including 1 and itself.

eg 8 = 1,2,4,8

Question 27

What is a prime number?

Answer 27

A number that only has two factors 1 and itself

Question 28

Answer 28

Question 29

Answer 29

Question 30

Answer 30

Question 31

Answer 31

2

Question 32

Answer 32

3

Question 33

Answer 33

4

Question 34

Answer 34

5

Question 35

Answer 35

6

Question 36

Answer 36

7

Question 37

Answer 37

8

Question 38

Answer 38

9

Question 39

Answer 39

10