Topics

Question 1

5,9,13,17

Answer 1

Arithmetic sequence

Question 2

3,9,27…

Answer 2

Geometric

Question 3

80,40,20,10,5

Answer 3

Geometric each value is being x by half

Question 4

2,4,7,11,16

Answer 4

When the 2nd difference is the same, the sequence is quadratic

Question 5

2,3,5,8,13,21

Answer 5

This is a Fibonacci type sequence. Each adjacent number is being added together to form the next

Question 6

N squared sequence ?

Answer 6

1,4,9,16,25

Question 7

2n squared sequence?

Answer 7

2,8,18,32

Question 8

3n squared sequence?

Answer 8

3,12,27,48

Question 9

IN STANDARD FORM the number being multiplied needs to be between 2 numbers. What two numbers do they have to be between.

Answer 9

1 and 10. E.g 7.3 x 10 to the power of -6

Question 10

Prove that the reoccurring decimal 0.24 has the value 8 over 33.

Answer 10

N=0.2424242424
100N=24.24242424
- n = 0.2424242424
24 over 99 = 8 over 33

Question 11

Work out the value of (8.3 X 10 to the power 6) - (4.1 x 10 to the power of 5).

Answer 11

8300000
410000 -
= 7.89 x 10 to the power 6
= 7890000