Question

In a different fibonacci sequence the forth term is 30 and the fifth term is 49 write down the first term in this sequence

Answer 1

Answer:

8

Step-by-step explanation:

Given,

5th term = 49 and 4th term = 30

Fibonacci sequence means sequence of numbers in which each successive number in the sequence is obtained by adding the two previous numbers in the sequence.

5th term = 4th term + 3rd term

49 = 30 + 3rd term

Therefore, 3rd term = 19

Now,

4th term = 2nd term + 3rd term

30 = 2nd term + 19

Therefore,

2nd term = 11

Now,

3rd term = 1st term + 2nd term

i.e. 19 = 1st term + 11

Therefore,

1st term = 8.

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