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The fifth term of the sequence for which...

The fifth term of the sequence for which `t_1= 1, t_2 = 2 and t_(n + 2) = t_n + t_(n + 1)` is

A

5

B

10

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
`t_3 = t_(1+2) =t_1 + t_2 =1+2=3`
`:. t_5 = t_(2+3) = t_2 + t_(2+1) = 2+3=5`
`:. t_5 = t_(3+2) = t_3 +t_4 =3+5 =8`
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