Answer:
They are consecutive terms in the Fibonacci Sequence.
Step-by-step explanation:
The sequence goes 1,1,2,3,5,8,13,21,...
Since 13 and 21 are consecutive here, that is the answer.
Do six multiply fifteen which equals to 90
The best answer would be D
Answer:
Answer is in a photo. I can only upload it to a file hosting service. link below!
Step-by-step explanation:
