Homework question help please (maths)?

[trickydickie]

Question below. I cannot work it out. Thanks. Any explanation greatly received too. Thanks.

Find the missing numbers in the following sequences 1, 2, 3, 5, ?, 13, 21, ?

Is it?

a) 11 & 24

b) 8 & 45

c) 8 & 34

d) 11 & 34

e)9 & 45

c) 8 & 24

It's (c). You get them by adding the previous 2 numbers together.

add 1 & 2 to get 3; add 2 and 3 to get 5, add 3 and 5 to get 8....add 13 to 21 to get 34.

yes, 8 and 34.

add the first digits together; they equal the third digit; 1 + 2 = 3.
add the second and third digits together, they equal the next one; 2 + 3 = 5;
and so on

Apologies for typos!

Thank you so much everyone

From the third number (3) the next number in the sequence is the sum of the previous two numbers

1+2=3
2+3=5
3+5=8
5+8=13
8+13=21
13+21=34

When looking at sequences, I always encouraged the children in my class to write underneath the difference between two consecutive numbers, so in your sequence it would say:

1...2...3...5...?...13...21...?
..1...1....2...?...?....8.....?

IF nothing jumps out at you obviously (like in this case) then put in the suggested numbers and see if you notice anything then about the differences. Sometimes they will be the same number, sometimes they will go up/down by 1 each time and in this case you'd see the sequence in the differences too...

Fibonacci sequence

This is the Fibonacci Series.

It's a beautiful thing.

Thanks everyone for answering.

I am sure I have dyscalculia so Anthracite you brought a smile to my face.

To be honest, this is a question on a job application I am doing. I know my children have had to learn sequencing in primary school so thought I might get the answer in this section.

I would never,ever have got that answer