Question

Here are the first five terms of Fibonacci sequence.

4, 4, 8, 12, 20

a) Write down the next two terms in the sequence ... , ...

The first three terms of a Fibonacci sequence are
n, 3n, 4n

b) Find the sixth term of this sequence

Answer 1

a) 32, 52

b) 18n

Explanation:

because 7n+n

3n+7

4

Answer 2

a) 32, 52

b) 18n

Explanation:

a)

12+20=32

20+32=52

b)

4th element = 3n+4n=7n

5th element = 4n+7n=11n

6th element = 7n+11n=18n