How does Fibonacci sequence begin?

Answer 1

1, 1 are the first two numbers in the sequence; so, that's where you begin.

In the Fibonacci sequence, you add numbers. Each sum is added to the previous largest number, to make the next number in the sequence.

So, adding the first two numbers; 1 + 1 = 2. Then, as 2 was the resulting sum; and one was the last largest number, you add them. 1 + 2 = 3. And so on...

The first ten numbers in the sequence are; 1, 1, 2, 3, 5, 8, 13, 21, 34, 55.

It continues like this, indefinitely.