Question

The 8th term of the sequence 1, 1, 2, 3, 5, 8 ............... is

• A. 25
• B. 24
• C. 23
• D. 21

Answer 1

The correct option is D 21

Actually it is Fibonacci sequence, in which next term is always sum of two previous terms.
As $2=1+1$
$3=1+2$
$5=2+3$
$8=3+5$
Therefore, next (7th) term$=5+8=13$
Hence, 7th term$=8+13=21$
Option D is correct.